--- title: "Astraythem" description: "I love my elder sister.. My love belongs to my elder sister... I'm in love with my elder sister... Sakurazuka Tsukumo has fallen in love. His beloved one i" image: "https://t.vndb.org/cv/45/101445.jpg" --- # Astraythem ![Astraythem](https://t.vndb.org/cv/45/101445.jpg) **Alternative Title:** アステリズム -Astraythem- **Aliases:** Asterism **Developer:** Chuablesoft **Release date:** Jun 29, 2012 **Platform:** Windows **Language:** Japanese, English, Chinese (simplified) **Rating:** 7.7/10 (117 votes) ## Description I love my elder sister.. My love belongs to my elder sister... I'm in love with my elder sister... Sakurazuka Tsukumo has fallen in love. His beloved one is his elder sister, Sakurazuka Natsuki. When he was a child, she risked her life to save him in front of Death's scythe. Her face on that rainy day has carved into his heart and he swore to protect her forever, to ensure that she would never have to suffer again. Time went by, while he got stronger and stronger, she became more and more beautiful. Will Tsukumo be able to confess his feelings to her? Will they ever be able to become a pair of lovers? "My answer had already been decided on that day." [Translated from [Getchu](http://www.getchu.com/soft.phtml?id=701550)] ## Characters ### Sakurazuka Tsukumo (桜塚 白雲) Tsukumo was adopted when he was very young kid - in 1999 - by the Sakurazuka family following the loss of his family because of a natural disaster in 1996. At first, he couldn't think of [url=https://vndb.org/c10013]Natsuki[/url] as his sister until she saved him - the same year - from drowning, getting hurt herself in the process. Ever since, he has been devoting a deep love to her, more than brotherly. Tsukumo rarely loses consciousness after a fight, even if it was a difficult fight. On the other hand, [url=https://vndb.org/c10014]Mimi[/url]'s kitchen nearly sent him to the other world ... [spoiler]After rescuing Mimi from a bunch of mobsters, she declares her love for Tsukumo who tells him he will think. Tsukumo then declares his love to his sister but is rejected. He then agrees to go out with Mimi as a friend, but the more time passes, the more Mimi is in love with him. Naive but smart, Mimi understands that Tsukumo loves someone else and asks him an ultmatum ... If Tsukumo don't see Mimi as her person only for him, he breakup with her. If he choose to have sex with Mimi but can't forget his love for Natsuki, she breakup with him. If Tsukumo choose Mimi, they stay together. Although he doesn't see Mimi as a romantic interest, Tsukumo loves her a lot and is very angry at him for breaking her heart. When his sister gets sick, he learns from [url=https://vndb.org/c10018]Kirihiko[/url] that this is probably due to poisoning. He thinks she was poisoned the day she saved Tsukumo from drowning years ago. When she dies, Tsukumo is destroyed but manages to recover thanks to his entourage and decides to save his sister from "himself" by preventing her from hurting herself in the past. So begins his incredible journey through the Time ...[/spoiler] - **Gender:** Male - **Aliases:** Boss / New boss, Ouji-savior - **Measurements:** Height: 177cm - **Hair:** Brown, Short, Spiky, Pubic Hair - **Body:** Teen, Slim, Pale, Muscular - **Clothes:** School Uniform, Trousers, Necktie, Shirt, Swim Shorts, Bandanna - **Personality:** Proactive, Secretive, Ore, Reserved, Honorable, Protective, Serious, Sister Complex, Brave, Loner - **Role:** Hero, Orphan, Son, Boyfriend, Friend, Rival, Student Club Member, Non-blood-related Brother, Classmate, Senpai, High School Student, Non-blood-related Son, Secret Identity, Delinquent, Younger Brother, Bad Student, Ex-boyfriend, Sexual Submissive - **Engages in:** Cooking, Fighting, Martial Arts, Sports, Unarmed Fighting, Time Travel, Bridal Carry, Polyamory, Breakup, Avoidable Infidelity - **Eyes:** Amber, Hosome - **Subject of:** Accident, Clinical Depression, Injury, Reincarnation, Turndown, Domestic Violence, Fainting, Seduction, Breakup - **Voiced by:** Nagakura Jinpachi ### Sakurazuka Tsukumo (桜塚 白雲) [spoiler]He is the onii-chan from [url=https://vndb.org/c10013]Natsuki[/url]'s timeline ( when she is an adult and a virgin ) she met in [url=https://vndb.org/c10025]her childhood[/url]. He is an alternative version of the [url=https://vndb.org/c10020]protagonist[/url], his history is a quite different. He also lived the same things as in the first chapter but with variations : For exemple, he don't know the existence of [url=https://vndb.org/c10014]Mimi[/url] because she never existed in his timeline and the events he lived such the rescue of Mimi becomes - for him - the rescue of [url=https://vndb.org/c10015]Akeno[/url] ( who takes her place in his story ). When he returns in the past for saving [url=https://vndb.org/c77138]his sister[/url] from her injury in 1999 and when he comes back in the present timeline, his sister was with another "[url=https://vndb.org/c77139]himself[/url]", the one from the timeline of the [url=https://vndb.org/c10021]Natsuki[/url] of 1999 who never has to seek to travel back in time in order to save his sister. His return to the present makes him exist in duplicate. And that's not the only thing that has changed. Some people he knew are completely different, their lives are different. His brain contains two versions of his memories, those of events that have been known since the beginning of the game and new ones that are parallel. Tsukumo's mission is far from over and he decides to go back in time with "[url=https://vndb.org/c69899]Doc[/url]" in 1996 ... Being the same Tsukumo that the player controls since the beginning of the game, he keeps all the attributes of his counterpart, just his way of dressing changes. He's the protagonist of the third chapter only.[/spoiler] - **Gender:** Male - **Alias:** Onii-chan - **Measurements:** Height: 177cm - **Hair:** Brown, Short, Spiky, Pubic Hair - **Body:** Teen, Slim, Pale, Muscular, Scar - **Clothes:** School Uniform, Trousers, Necktie, Shirt, Swim Shorts, Bandanna - **Personality:** Proactive, Secretive, Ore, Reserved, Honorable, Protective, Serious, Sister Complex, Brave, Loner - **Role:** Hero, Orphan, Boyfriend, Friend, Rival, Student Club Member, Non-blood-related Brother, Classmate, Senpai, High School Student, Non-blood-related Son, Secret Identity, Delinquent, Younger Brother, Bad Student - **Engages in:** Cooking, Fighting, Martial Arts, Sports, Unarmed Fighting, Self-sacrifice, Time Travel, Dimensional Travel, Bridal Carry - **Eyes:** Amber, Hosome - **Subject of:** Accident, Terminal Illness, Clinical Depression, Death, Injury, Illness, Hospitalization, Turndown, Domestic Violence, Fainting, Memory Alteration - **Voiced by:** Nagakura Jinpachi ### Kagami Mimi (加々見 美々) Mimi is a young girl that [url=https://vndb.org/c10020]Tsukumo[/url] crossed a night in the street during his jogging, she searched her losting white cat nammed Sugar. Some times later, he learned she's one of his kouhai in his school. She's the best friend and classmate of [url=https://vndb.org/c10015]Akeno[/url]. She tends to faint after a strong emotion. She is also a very pure girl. Since Tsukumo saved her, she talks about him as her "Ouji-savior" - because she didn't know his first name - to her best friend, Akeno, who made the connection with Tsukumo when she asked her if she knew any something else about him and she replied that she only knew his last name, Sakurazuka. [spoiler]She is the daughter of [url=https://vndb.org/c10026]Nene[/url] and of the [url=https://vndb.org/c69829]professor Kagami[/url], a very famous and great physicist that Tsukumo has already seen several times on television with [url=https://vndb.org/c10013]Natsuki[/url]. Mimi is very envious of Tsukumo and Natsuki's fraternal relationship because she is an only child and would like to know this kind of relationship. Although she doesn't seem to be very smart, Mimi is a girl who understands things very easily just by observing them. Very much in love with Tsukumo, she sees that the more time passes, the more he seems to be lost. When she learns that Natsuki is not his biological sister, she begins to understand that Tsukumo is loving her more than a sister. When Akeno tells her that she wants to give her tickets to go to the cinema between lovers, Mimi asks her to put them in the mailbox of Tsukmo's house, waiting for his reaction. When she learns that Tsukumo gave the tickets to Natsuki, her doubts are true and she'll put - in tears - an ultimatum to the man she loves ... If Tsukumo doesn't choose her, they separate and she has a depression because she is heartbroken. She nevertheless wishes that her senpai finds happiness on the day of tanabata ( which will affect Tsukumo enormously ).[/spoiler] - **Gender:** Female - **Alias:** Bibi - **Measurements:** Height: 151cm, Bust-Waist-Hips: 79-57-81cm, B cup - **Birthday:** 8 August - **Hair:** Blue, Short - **Body:** Slim, Pale, Kid - **Clothes:** School Uniform, Miniskirt, Shorts, Knee-high Socks, Thigh-high Stockings, Tank Top, Bikini, Hairpin, Panties, Bra, Ribbon Tie, Clothing with Ribbons - **Engages in:** Cooking, Breakup - **Eyes:** Blue, Tareme - **Subject of:** Clinical Depression, Fainting, Breakup - **Role:** Daughter, Girlfriend, Friend, Student Club Member, Classmate, Kouhai, High School Student, Violinist, Ex-girlfriend - **Personality:** Kind, Naive, Smart, Honest, Watashi - **Voiced by:** Suzuta Miyako ### Nagi Kuurin (凪 九厘) [url=https://vndb.org/c10021]Natsuki[/url]'s classmate and friend in 1999. She looks and acts cold toward men but not women. [spoiler]She and her [url=https://vndb.org/c10023]father[/url] take care of housing [url=https://vndb.org/c10020]Tsukumo[/url] in 1999 and provide him with what he needs. It is also them who invented an identity for him in order to infiltrate the society of 1999; he will now be known as "Nagi Tsukumo" by the outside world. Kuurin's role is to be his "guardian" and she will pretend to be his non-blood-related sister.[/spoiler] She is idolized at her high school and called "Onee-sama" by her classmates [spoiler](Tsukumo will be called "Onii-sama" because he is supposed to be her brother)[/spoiler]. She takes advantage of her notoriety to seduce girls and have sex with them. Her personality is quite similar to what it is in the present time, although she acts more ... explosive and bitter. She is stronger than Tsukumo in singular combat. She makes fun of him by calling him "Saru" (monkey) and, because he is a huge siscon, calling his sister's name in his sleep. Her favorite perfume is vanilla. [spoiler]She was the victim of horrible events in the past - the origin of her hatred towards men - and has nightmares about these events every time she falls asleep, but doesn't really remember what she was afraid of in them when she wakes up in panic. Despite this she seems to appreciate Tsukumo, or just considers him to be better than the other men she despises.[/spoiler] [spoiler]The trait "Sex with Others" concerns her and [url=https://vndb.org/c69871]Yurika[/url] because they sleep together. There may be other girls whom she sleeps with off-screen, but not boys.[/spoiler] - **Gender:** Female - **Measurements:** Height: 170cm, Bust-Waist-Hips: 85-60-90cm, D cup - **Birthday:** 9 September - **Hair:** Violet, Shoulder-length, V Bangs, Shaggy - **Body:** Teen, Slim, Pale - **Clothes:** School Uniform, Dress, Headband, Necktie, Cross Necklace, Skirt, Pantyhose, Gothic, Bikini, Detached Sleeves, Yukata, Ribbon Tie, Cross Design - **Engages in:** Fighting, Domestic Violence, Drinking, Teasing, Unarmed Fighting, Infidelity, Sexual Harassment, Seduction, Polyamory, Breakup - **Subject of:** Amnesia, Psychological Trauma, Androphobia, Bridal Carry - **Eyes:** Amber, Jitome - **Personality:** Secretive, Tsundere, Kuudere, Refined, Smart, Womanizer, Assertive, Sharp-tongued, Watashi, Promiscuous - **Role:** Daughter, Girlfriend, Friend, Student Club President, Non-blood-related Sister, Classmate, Wealthy, High School Student, Non-blood-related Daughter, Not a Virgin, Homosexual, Popular, Ex-girlfriend, Ojousama - **Voiced by:** Kurata Mariya ### Sakurazuka Natsuki (桜塚 名月) She is the older sister of [url=https://vndb.org/c10020]Tsukumo[/url] and a school nurse. She's quite popular among the students and teachers. A rumor says that one of her former schoolmate - a rich medical doctor - would try to go out with her. In reality, this rumor was created by Tsukumo for stopping the boys who try to going out with his sister. She's also the subject of the sexual fantaisies of her little brother who had a secret crush on her since ever. She's a big fan of astrology and science fiction, she reads a lot of novels and often watches documentaries on television. She is an inconsiderate fan of the physicist and [url=https://vndb.org/c69829]professor Kagami[/url], she owns and has read all his books. Her favorite theme and subject is the time travel. One of her favorite writers is - among overs - [url=https://en.wikipedia.org/wiki/Isaac_Asimov]Isaac Asimov[/url]. Her passion for astrology and science fiction came from a "friend" she had in high school and who disappeared at that time. She used to call him "Onii-chan". Given the way she talks about this "friend", he probably had to more than a simple "friend", maybe he had to be her lover. [spoiler]Natsuki rejects Tsukumo because she is in love with her "friend" who has disappeared and can not love Tsukumo other than brotherly love. When he goes out with [url=https://vndb.org/c10014]Mimi[/url], she starts to depress and drink a bit more than before. Then, she realizes her true feelings ... Then, she falls seriously ill due to a poison that has been circulating in her blood since she has getting hurt by rescuing Tsukumo of dying in 1999. Her death then triggers a chain of events for Tsukumo, in order to save her. The traits corresponding to the state of her virginity have a value that varies according to the temporal line and the parallel dimension born as a result of a minor or major temporal change.[/spoiler] This heroine has [url=/c10025]another alternative version[/url] (from when she were even younger, in the year of 1996). - **Gender:** Female - **Measurements:** Height: 164cm, Bust-Waist-Hips: 88-59-87cm, E cup - **Birthday:** 19 July - **Hair:** Blond, Waist Length+, Wavy, Braid, Spiky Bangs - **Body:** Slim, Pale, Young-adult, Scar - **Engages in:** Cooking, Drinking, Cosplay, Reading - **Clothes:** Mini-dress, Glasses, Wristband, Skirt, Thigh-high Stockings, Maid's Dress, Shawl, Sandals, Lab Coat, Tank Top, Bikini, Hair Flower, Naked, Panties, Clothing with Ribbons, Ribbon Hair Tie, Contact Lenses - **Personality:** Spoiled, Watashi - **Subject of:** Terminal Illness, Clinical Depression, Death, Illness, Resurrection, Hospitalization, Bridal Carry - **Role:** Daughter, Friend, Childhood Friend, Non-blood-related Sister, Popular, School Nurse, Older Sister, Tutor, Not an Anal Virgin - **Eyes:** Tareme, Teal - **Voiced by:** Koharubara Haeka ### Sakurazuka Natsuki (桜塚 名月) This is the same [url=/c10013]Natsuki Sakurazuka[/url], only younger. She looked like this in the year of 1999. On the other hand, her personality is slightly different from that of the present time because she is more reserved and timid. [spoiler]She jumps on [url=https://vndb.org/c10020]Tsukumo[/url]'s neck the day of his arrival by calling him "Oni-chan". Knowing she misunderstands, Tsukumo - on the verge of being called her "Nee-san" - pretends not to know her, which makes her deeply sad. Tsukumo will finish in her class as a transferred student. [url=https://vndb.org/c10022]Kuurin[/url] makes her believe that Tsukumo has lost his memory. She often comforts with Kuurin who seems to be her best friend and her confidante. She already told her about her "Onii-chan". Even if Tsukumo is supposed to have lost his memory, she will pretend in front of her whole class that she is his girlfriend. Some time after Kuurin will try to rob her romantic interest ( she can get there depending on the route chosen ). The trait corresponding to the state of her virginity have a value that varies according to the temporal line and the parallel dimension born as a result of a minor or major temporal change.[/spoiler] She is described by her classmates as the most beautiful and kind girl in high school. The boys also call her "untouchable beauty" because she rejects all boys when they confess. This heroine has [url=/c10025]another alternative version[/url] (from when she were even younger, in the year of 1996). - **Gender:** Female - **Alias:** Natsuki-chan - **Measurements:** Height: 155cm, Bust-Waist-Hips: 82-58-84cm, C cup - **Birthday:** 19 July - **Hair:** Blond, Ponytail, Waist Length+, Spiky Bangs - **Body:** Teen, Slim, Pale - **Clothes:** School Uniform, Miniskirt, Maid's Dress, Bikini, Hair Flower, Panties, Bra, Yukata, Ribbon Tie, Ribbon Hair Tie, Strapless Swimsuit, Maid's Headdress - **Personality:** Shy, Stubborn, Assertive, Watashi - **Engages in:** Drinking, Cosplay, Polyamory - **Role:** Girlfriend, Friend, Childhood Friend, Non-blood-related Sister, Classmate, High School Student, Popular, Not an Anal Virgin - **Subject of:** Kidnapping, Infidelity - **Eyes:** Tareme, Teal - **Voiced by:** Koharubara Haeka ### Sakurazuka Natsuki (桜塚 名月) [spoiler]It was at this time that she met onii-chan for the first time. It was also at that time that she found an [url=https://vndb.org/c10020]abandoned baby[/url].[/spoiler] This is Natsuki in the year of 1996. There are two versions of her in the game when she is older: [url=/c10021]one from the year of 1999[/url], and [url=/c10013]one from the present[/url]. - **Gender:** Female - **Measurements:** Height: 146cm, Bust-Waist-Hips: 76-56-78cm, A cup - **Birthday:** 19 July - **Hair:** Blond, Twin Tails, Waist Length+, Wavy, Spiky Bangs - **Body:** Teen, Slim, Pale, Kid - **Clothes:** School Uniform, Dress, Sport Bloomers, One Piece Swimsuit, Overall, Hair Flower, Panties, Bra, Sports Uniform, Ribbon Tie - **Role:** Non-blood-related Sister, Middle School Student - **Personality:** Naive, Immature, Brave - **Eyes:** Tareme, Teal - **Voiced by:** Koharubara Haeka ### Doctor (博士) [spoiler]The doctor that only [url=https://vndb.org/c69893]Tsukumo[/url] knows his existence ... He lost his wife and daughter in the disaster of 1996 and work with Tsukumo for their respectives interests. They help each other to reach their goals. He has many and different memories on Tsukumo but with variations. He remembers a Tsukumo with a yellow bandanna and another with a green bandanna. He realizes that their time travel can also be interdimensional, and that he and Tsukumo may not be the first versions of themselves to travel back in time and exceed the dimensional limits. He then develops his theory on "The complexity of Time" ...[/spoiler] - **Gender:** Male - **Alias:** Doc - **Hair:** Curtained, Short, Grey - **Body:** Slim, Pale, Adult - **Clothes:** Trousers, Shirt - **Eyes:** Blue, Hosome - **Personality:** Secretive, Smart, Protective, Brave, Watashi - **Subject of:** Accident, Injury, Disability - **Role:** Widower, Friend, Scientist, Secret Identity - **Engages in:** Time Travel, Dimensional Travel, Not Sexually Involved - **Voiced by:** Camembert Juuendou ### Father (父さん) He is the father of [url=https://vndb.org/c10013]Natsuki[/url] and [url=https://vndb.org/c10020]Tsukumo[/url]. He left with his [url=https://vndb.org/c69869]wife[/url] to take over a family business outside the city in the present time and no longer live in the family home. They come back from time to time to visit their children. They are much more present in the past because they work in the city and not outside (because they have not yet taken over the family business). - **Gender:** Male - **Alias:** Daddy - **Hair:** Brown - **Clothes:** Shirt - **Role:** Husband, Father, Non-blood-related Father, No Name - **Personality:** Kind, Protective - **Eyes:** Teal - **Engages in:** Not Sexually Involved ### Hoshi Sakuya (保志 朔夜) He is the boyfriend and senpai of [url=https://vndb.org/c10015]Akeno[/url] and also [url=https://vndb.org/c10020]Tsukumo[/url]'s friend and classmate. He loves very much his girlfriend, even if she's irritating sometimes ... He's a guy who has a good background, he does not judge people about their appearance and he considers himself the first friend of Tsukumo ( which is true ). He is the type not to get into trouble, but he draws to Tsukumo, spreading the rumor that his friend is the strongest, many offenders come to measure their strength against him. It was he who spread the news of his rising in fame after defeating [url=https://vndb.org/c10017]Torazou[/url] ( the current "Boss" ), renaming Tsukumo the "new Boss". - **Gender:** Male - **Hair:** Blue, Multicolored, Spiky Bangs - **Body:** Teen, Slim, Pale - **Clothes:** School Uniform, Trousers, Necktie, Shirt, Swim Shorts - **Eyes:** Amber, Tareme - **Personality:** Ore, Friendly, Kind - **Role:** Boyfriend, Friend, Classmate, Senpai, High School Student, Not a Virgin - **Engages in:** Not Sexually Involved - **Voiced by:** Harada Tomotaka ### Kagami Nene (加々見 音々) Nana is [url=https://vndb.org/c69829]professor Kagami[/url]'s wife and [url=/c10014]Mimi[/url]'s mother at the time when she was pregnant with her, in the year of 1996. - **Gender:** Female - **Hair:** Ponytail, Long, Side Tail - **Body:** Pale, Young-adult - **Clothes:** Dress, Hair Tie - **Role:** Wife, Mother - **Subject of:** Pregnancy - **Eyes:** Tareme - **Engages in:** Not Sexually Involved - **Personality:** Watashi - **Voiced by:** Arisugawa Miyabi ### Kasugamori Akeno (春日森 明乃) She is the girlfriend of [url=https://vndb.org/c10016]Sakuya[/url] and [url=https://vndb.org/c10020]Tsukumo[/url]'s friend. She's also their kouhai. Her best friend is [url=https://vndb.org/c10014]Bibi[/url] who is also her classmate. She is frank and without genes. When she sees the muscles of Tsukumo when they are at the beach, she does not hesitate to touch him in front of her boyfriend, making him a little jealous. When Sakuya tries to value himself in her eyes, she doesn't hesitate to devalue him in one or two words, especially by calling into question his night performances ( her tsun-tsun side ) ... She's easly embarassed when her boyfriend is complimenting her and she becomes very cute ( her dere-dere side ). - **Gender:** Female - **Alias:** Akki - **Measurements:** Height: 153cm - **Birthday:** 22 February - **Hair:** Twin Tails, Long, Braid, Spiky Bangs - **Body:** Teen, Slim, Pale - **Clothes:** School Uniform, Miniskirt, Thigh-high Stockings, Bikini, Ribbon Tie - **Personality:** Tsundere, Watashi - **Role:** Girlfriend, Friend, Classmate, High School Student, Not a Virgin, Popular - **Engages in:** Lacrosse, Not Sexually Involved - **Eyes:** Pink, Tareme - **Voiced by:** Yukito Saori ### Mother (母さん) She is the mother of [url=https://vndb.org/c10013]Natsuki[/url] and [url=https://vndb.org/c10020]Tsukumo[/url]. She left with her [url=https://vndb.org/c69868]husband[/url] to take over a family business outside the city in the present time and no longer live in the family home. They come back from time to time to visit their children. They are much more present in the past because they work in the city and not outside (because they have not yet taken over the family business). - **Gender:** Female - **Alias:** Mommy - **Hair:** Blond, Short - **Clothes:** Cardigan - **Role:** Wife, Mother, Non-blood-related Mother - **Personality:** Kind, Protective - **Eyes:** Teal - **Engages in:** Not Sexually Involved ### Nagi Kuurin (凪 九厘) A suspicious and unknown woman who seems to be staring at [url=https://vndb.org/c10020]Tsukumo[/url] and [url=https://vndb.org/c10013]Natsuki[/url] during one of their outings together ... [spoiler]She will come to meet Tsukumo after Natsuki's death. She knows strangely well the siblings and seems to know everything. She disguises a mystical aura around her and seems unreal. She asks Tsukumo if he wants to save his sister and she tells him that there is a way to save her and that she can help him get there. In reality, she's Natsuki's classmate from when they were in high school. Her height is 180 cm when including the heels she usually wears. The only man she was able to love was the "[url=https://vndb.org/c10020]friend[/url]" of Natsuki and she still loves him.[/spoiler] - **Gender:** Female - **Aliases:** Stalker, Esper, Demon - **Measurements:** Height: 170cm - **Hair:** Violet, Wavy, Shoulder-length, Eye Covering, Spiky Bangs - **Body:** Slim, Pale, Young-adult, Nail Polish, Big Breasts - **Subject of:** Amnesia, Androphobia - **Eyes:** Amber, Hosome - **Clothes:** Suit, Skirt, Gothic, Court Shoes, Hairpin, Flower - **Personality:** Secretive, Refined, Mysterious, Watashi - **Role:** Daughter, Friend, Non-blood-related Sister, Classmate, Wealthy, Non-blood-related Daughter, Homosexual - **Engages in:** Not Sexually Involved - **Voiced by:** Kurata Mariya ### Nagi Kyouichirou (凪 鏡一郎) [url=/c10022]Kuurin[/url]'s millionaire father. [spoiler]Kuurin isn't his real daughter, he adopted her after the disaster of 1996, when he met her in a hospital. At that time, Kuuri was completely amnesiac, however, no man could approach her because she was having hysterics crisis at their simple mere sight. Her body had traces of wounds caused by men, spread over a very long time. She had to be beaten. They thinked she was probably "raped" several times in the past too. Having forgotten her rape, his daughter continues to make nightmares every nights of her atrocious moments, but doesn't know and remember why when she wakes up in panic. He confided to [url=https://vndb.org/c10020]Tsukumo[/url] his disengagement because he can not help her.[/spoiler] - **Gender:** Male - **Hair:** Curtained, Short, Moustache, Grey - **Body:** Slim, Pale, Adult - **Clothes:** Trousers, Suit, Necktie - **Eyes:** Blue, Hosome - **Personality:** Secretive, Watashi - **Items:** Walking Stick - **Subject of:** Accident, Injury, Disability - **Role:** Father, Friend, Wealthy, Non-blood-related Father, Secret Identity - **Engages in:** Not Sexually Involved - **Voiced by:** Camembert Juuendou ### Numabuchi Ryuuzou (沼淵 竜造) The delinquant leader in 1996 and 1999, seems to want some bad things to [url=https://vndb.org/c10020]Tsukumo[/url]. His war symbol is a dragon. [spoiler]He is the older brother of [url=https://vndb.org/c10017]Torazou[/url], He died in a motorcycle accident 3 years before the "present time". It is for this reason that Torazou understands Tsukumo's sorrow when his sister dies and seeks to help him.[/spoiler] - **Gender:** Male - **Hair:** Brown, Shoulder-length, Green, Multicolored - **Body:** Pale, Adult - **Clothes:** Trousers, Shirt - **Eyes:** Red, Hosome - **Personality:** Kuudere, Ore, Honorable, Cold-hearted, Kind - **Engages in:** Driving, Smoking, Unarmed Fighting, Kidnapping, Not Sexually Involved - **Subject of:** Death, Injury - **Role:** Gang Leader, Delinquent, Older Brother - **Voiced by:** Fujitomi Heikichi ### Numabuchi Torazou (沼淵 虎造) He is the leader of the gangsters of the city, known as undefeated. His "people" and others call him "Boss" because he runs a gang that rages in several schools. He considerates himself as a rival of [url=https://vndb.org/c10020]Tsukumo[/url]. His war symbol is a tiger. [spoiler]Even if he looks extremely cold, he can be "considerate" with the people he likes. The day he learns of [url=https://vndb.org/c10013]Natsuki-sensei[/url]'s death, he breaks Tsukumo's mouth so he can get out of his depression and become strong again. Without him, Tsukumo would not have sought - nor thought - to go back in time. His relationship with Tsukumo - after their fight - is very similar to that of Vegeta and Goku in Dragon Ball Z.[/spoiler] - **Gender:** Male - **Alias:** Boss - **Hair:** Brown, Red, Shoulder-length, Multicolored - **Body:** Pale, Adult - **Clothes:** School Uniform, Trousers, Shirt - **Eyes:** Red, Hosome - **Personality:** Kuudere, Ore, Honorable, Cold-hearted, Kind - **Role:** Friend, Rival, High School Student, Gang Leader, Delinquent, Younger Brother - **Subject of:** Injury - **Engages in:** Unarmed Fighting, Not Sexually Involved - **Voiced by:** Fujitomi Heikichi ### Professor Kagami (加々見 教師) A great physicist who has worked a lot on the time travel of which [url=https://vndb.org/c10013]Natsuki[/url] is a fan and who often goes into the documentaries she watches. [spoiler]It's [url=https://vndb.org/c10026]Nene[/url]'s husband and [url=https://vndb.org]Mimi[/url]'s dad. His passion for time traveling would come from a person he met in the past and who always ordered at a cafe the "back menu", a shrimp avocado bowl. He sometimes continues this little tradition when he goes to the same cafe today. His research and works served as bases for the construction of the Nagi family's time machine.[/spoiler] - **Gender:** Male - **Alias:** Papa - **Hair:** Blue - **Eyes:** Blue - **Role:** Husband, Father, Scientist - **Personality:** Funny, Smart - **Engages in:** Not Sexually Involved - **Voiced by:** Camembert Juuendou ### Sakurazuka Natsuki (桜塚 名月) [spoiler]The Natsuki that [url=https://vndb.org/c69893]Tsukumo[/url] finds alongside another... [url=https://vndb.org/c77139]Tsukumo[/url]. In this temporality, Tsukumo ("Onii-san") managed to save Natsuki from her accident, however he finds himself in "double copy" in his temporality (present time). He then decides not to interact with them so as not to destroy the temporal flow (or something like that) but a fight between his other him, Natsuki (who loses consciousness) and thugs force him to intervene. Being the same [url=https://vndb.org/c10013]Natsuki[/url] that the player knows since the beginning of the game, she keeps all the attributes of her counterpart, just her role and her health state changes. Seen only in the third chapter.[/spoiler] - **Gender:** Female - **Alias:** Nee-san - **Measurements:** Height: 164cm, Bust-Waist-Hips: 88-59-87cm, E cup - **Birthday:** 19 July - **Hair:** Blond, Waist Length+, Wavy, Braid, Spiky Bangs - **Body:** Slim, Pale, Young-adult, Big Breast Sizes - **Engages in:** Cooking, Drinking, Cosplay, Not Sexually Involved, Reading - **Clothes:** Mini-dress, Glasses, Wristband, Skirt, Thigh-high Stockings, Maid's Dress, Shawl, Sandals, Lab Coat, Tank Top, Bikini, Hair Flower, Naked, Panties, Clothing with Ribbons, Ribbon Hair Tie, Contact Lenses - **Personality:** Spoiled, Watashi - **Role:** Daughter, Friend, Childhood Friend, Non-blood-related Sister, Popular, School Nurse, Older Sister, Tutor - **Eyes:** Tareme, Teal - **Subject of:** Fainting, Bridal Carry - **Voiced by:** Koharubara Haeka ### Sakurazuka Tsukumo (桜塚 白雲) [url=https://vndb.org/c10020]Tsukumo[/url] when he arrives in his new family in 1999. [spoiler]The Tsukumo from present attends to his own introduction into the family when he goes in 1999. He took the opportunity to ask his parents at the time why he adopted a boy violent and lonely and gets answers that warms his heart.[/spoiler] - **Gender:** Male - **Aliases:** Tsukki, Mokun, Junior, Lone Wolf - **Hair:** Brown, Short, Spiky - **Role:** Orphan, Non-blood-related Brother, Non-blood-related Son - **Eyes:** Amber, Hosome - **Body:** Kid - **Subject of:** Accident - **Engages in:** Not Sexually Involved - **Personality:** Loner - **Voiced by:** Nagakura Jinpachi ### Sakurazuka Tsukumo (桜塚 白雲) [spoiler]Another Tsukumo that [url=https://vndb.org/c69893]Tsukumo[/url] finds alongside another [url=https://vndb.org/c77138]Natsuki[/url]. In this temporality, Tsukumo ("Onii-san") managed to save Natsuki from her accident, however he finds himself in "double copy" in his temporality (present time). He then decides not to interact with them so as not to destroy the temporal flow (or something like that) but a fight between his other him, Natsuki (who loses consciousness) and thugs force him to intervene. Being the same [url=https://vndb.org/c10020]Tsukumo[/url] that the player controls since the beginning of the game, he keeps all the attributes of his counterpart, just his role changes. Seen only in the third chapter.[/spoiler] - **Gender:** Male - **Measurements:** Height: 177cm - **Hair:** Brown, Short, Spiky, Pubic Hair - **Body:** Teen, Slim, Pale, Muscular - **Clothes:** School Uniform, Trousers, Necktie, Shirt, Swim Shorts - **Personality:** Proactive, Secretive, Ore, Reserved, Honorable, Protective, Serious, Sister Complex, Brave, Loner - **Role:** Orphan, Friend, Rival, Student Club Member, Non-blood-related Brother, Classmate, Senpai, High School Student, Non-blood-related Son, Delinquent, Younger Brother, Bad Student - **Engages in:** Cooking, Fighting, Martial Arts, Sports, Unarmed Fighting, Not Sexually Involved, Bridal Carry - **Eyes:** Amber, Hosome - **Subject of:** Clinical Depression, Injury, Domestic Violence, Fainting - **Voiced by:** Nagakura Jinpachi ### Takashima Kirihiko (高島 霧彦) An old acquaintance of [url=https://vndb.org/c10013]Natsuki[/url] from high school. He is in a way his drinking partner and his confidant. He serves as a model for [url=https://vndb.org/c10020]Tsukumo[/url]'s story of his sister's fake boyfriend. He apparently met Tsukumo once in the past when he was younger - but Tsukumo is sure he never met him before - and he also adds that they were the same age at the time ... [spoiler]It is thanks to him and his research that Tsukumo knows the cause of Natsuki's death.[/spoiler] He has the same last name as [url=/c9176]Takashima Kimihiko[/url] from PurexCure and [url=/c9231]Takashima Haruhiko[/url] from Koibumi Romantica; the three of them also have a similar appearance, personality AND occupation. - **Gender:** Male - **Aliases:** Dr. Perfect, Dr.パーフェクト - **Hair:** Brown, Curtained, Short, Parted to Side - **Body:** Slim, Pale, Young-adult - **Eyes:** Amber, Hosome - **Clothes:** Necktie, Lab Coat - **Personality:** Boku, Kind - **Engages in:** Drinking, Not Sexually Involved - **Role:** Friend, Childhood Friend, Medical Doctor, Schoolmate - **Voiced by:** Kawamura Masato ### Takashima Kirihiko (高島 霧彦) A classmate of [url=https://vndb.org/c10021]Natsuki[/url] in 1999. - **Gender:** Male - **Hair:** Brown, Curtained, Short - **Body:** Teen, Slim, Pale - **Clothes:** School Uniform, Trousers, Shirt - **Eyes:** Amber, Tareme - **Personality:** Boku, Kind - **Role:** Friend, Childhood Friend, Classmate, High School Student - **Engages in:** Not Sexually Involved - **Voiced by:** Kawamura Masato ### Yurika (友梨香) Yurika is a kouhai and the girlfriend of [url=https://vndb.org/c10022]Kuurin[/url] in 1999. She idolizes Kuurin and she is deeply in love with her, but we do not know if Kuurin really regarded her as her girlfriend or as a one night stand partner. [spoiler]As they are about to make love, Yurika tells Yuurin that she has changed because of this "[url=https://vndb.org/c10020]damn boy[/url]" and is very jealous. She's afraid Kuurin will leave her for him.[/spoiler] The trait "Sex with Others" only concerns her and Kuurin because they sleep together. - **Gender:** Female - **Hair:** Brown, Shoulder-length - **Body:** Teen, Slim, Pale - **Eyes:** Amber - **Personality:** Yandere, Deredere, Kind, Jealous - **Role:** Girlfriend, Student Club Member, Schoolmate, Kouhai, Homosexual, Ex-girlfriend - **Subject of:** Teasing, Sexual Harassment, Androphobia, Infidelity, Breakup ### Ashikaga Haneru (足利 はねる) - **Gender:** Female - **Aliases:** Pyon, ピョン - **Measurements:** Height: 150cm - **Birthday:** 21 October - **Hair:** Blue, Ahoge, Short, Spiky, Short Bangs, Pubic Hair - **Body:** Teen, Slim, Pale, Big Breast Sizes - **Clothes:** School Uniform, Suit, Headband, Necktie, Skirt, Miniskirt, Gym Shorts, Sports Shoes, Hoodie, Bikini, Sports Uniform, Flower, Band-aid - **Personality:** Hard Worker, Airhead, Tomboy, Naive, Energetic, Honest - **Eyes:** Green, Tareme - **Engages in:** Sports, Athletics - **Role:** Classmate, High School Student, Part-time Worker, School Athletic Club Member - **Items:** Bag ### Girl (女の子) [spoiler]A young woman with a baby [url=https://vndb.org/c69893]Tsukumo[/url] crosses on the boat dock in 1996. She seems very sad and reserved.[/spoiler] - **Gender:** Female - **Hair:** Violet, Long, Braid, Eye Covering - **Body:** Slim, Pale, Young-adult - **Eyes:** Amber - **Personality:** Reserved, Watashi - **Role:** Mother, No Name - **Engages in:** Not Sexually Involved, Child Abandonment - **Voiced by:** Kurata Mariya ### Haruse Uta (春瀬 歌) - **Gender:** Female - **Aliases:** Hamo, ハモ - **Measurements:** Height: 155cm - **Birthday:** 9 November - **Hair:** Red, Shoulder-length, Tiny Braid - **Body:** Teen, Slim, Pale - **Clothes:** School Uniform, Apron, Hat, Necktie, Miniskirt, Pantyhose, Thigh-high Stockings, Hoodie, Beret, Bikini, Nurse Uniform, Hairpin, Panties - **Engages in:** Cooking, Teasing - **Eyes:** Violet, Tareme - **Personality:** Carefree, Sweets Lover - **Role:** Cheerleader, Cook, Classmate, High School Student, Part-time Worker - **Items:** Lollipop ### Kagami Mimi (加々見 美々) [url=https://vndb.org/c10014]Mimi[/url] in 1999. - **Gender:** Female - **Alias:** Mi-chan - **Hair:** Blue, Short - **Eyes:** Blue, Tareme - **Body:** Kid - **Role:** Daughter - **Personality:** Kind, Immature - **Engages in:** Not Sexually Involved - **Voiced by:** Suzuta Miyako ### Nozomi (希) A young mother who has just had her baby whom [url=https://vndb.org/c10013]Natsuki[/url] meets in the outside courtyard of the hospital and who is hospitalized because she has cancer, they will get along fairly quickly. She is good advice and will help Natsuki reorder her feelings. - **Gender:** Female - **Alias:** Nozomi-san - **Hair:** Violet, Ponytail, Shoulder-length - **Eyes:** Blue - **Body:** Young-adult - **Clothes:** Dress, Glasses, Cardigan - **Role:** Mother - **Subject of:** Illness, Hospitalization - **Engages in:** Not Sexually Involved - **Voiced by:** Suzuta Miyako ### Oneyama Genta (尾根山 厳太) He has the name and appearance of [url=/c9172]Oneyama Genta[/url] from PurexCure. Despite that, these characters are two different people because PurexCure and Koibumi Romantica are set in different times. (Koibumi Romantica's events are happening at least 50 years before the events in PurexCure.) He seems to be the martial master of [url=https://vndb.org/c10020]Tsukumo[/url] in [url=https://vndb.org/v7423]Astraythem[/url] because he called him "Master". - **Gender:** Male - **Aliases:** Gen-san, 厳さん - **Hair:** Blond, Short, Goatee - **Body:** Slim, Pale, Adult - **Clothes:** Trousers, Apron, Necklace, Shirt, T-shirt, Bandanna - **Eyes:** Amber, Hosome ## Shops - [Official Website](http://www.chuable.net/ast/) ## Releases ### Japanese - **2012-03-29**: Astraythem - Trial Edition - [Official website](http://www.chuable.net/ast/download/dl_trial.html) - **2012-06-29**: Astraythem - Package Edition - [Official website](http://www.chuable.net/ast/), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=15044) - **2013-12-06**: Astraythem - Download Edition - [Official website](http://www.chuable.net/ast/), [DMM](https://dlsoft.dmm.co.jp/detail/hobe_0266/) - **2017-01-06**: ChuableSoft Variety Set - [DMM](https://dlsoft.dmm.co.jp/detail/hobe_0350pack/) - **2017-12-22**: ChuableSoft 13 Titles Premium Pack - [DMM](https://dlsoft.dmm.co.jp/en/detail/dmmgames_0051pack/) ### English - **2022**: Astraythem - [Official website](https://sugoivisualnovel.up.railway.app/vns/7423) ### Chinese (simplified) - **TBA**: Xingxiu Lianqu -Astraythem- - [Official website](https://tieba.baidu.com/p/6831964912) ## Tags Sexual Content, ADV, High School, Unarmed Combat, Lesbian Sex, Non-blood-related Brother/Sister Incest, Romance, Comedy, Kuudere Heroine, Male Protagonist, Fighting Protagonist, Past, Drama, Multiple Endings, Loli Heroine, Lolicon, One True End, Ojousama Heroine, Family, Fictional Modern Day Japanese Town, Protagonist's Non-blood-related Sister as a Heroine, Time Travel, Alternate Dimensions, Illness, Female Protagonist for a Short Time, School Nurse Support Character, Dramatic Love Triangle, Harem Ending, Adult Heroine, Lesbian Heroine, Rape Victim Heroine, Childhood Promise, Heroine with Gothic Look, Love Overcomes All, Protagonist's Kouhai as a Heroine, Episodic Story, Tsundere Heroine, Other Perspectives, Protagonist's Blood-related Mother as a Heroine, Flashback, Ponytail Heroine, Energetic Heroine, Proactive Protagonist, Protagonist with a Face, Defloration, Sex in Public Places, Side Portraits, Anal Penetration, Footjob, Boobjob, Summer, Protagonist with Partial Voice Acting, Flashforward, Group of Friends, Orphan Protagonist, Death of Heroine, Heroine with Swimsuits, Twin Tail Heroine, Sixty-nine, Blowjob, Death of Protagonist, Extremely (un)Lucky Protagonist, Intercrural Sex, Anilingus, Masturbation, Buttjob, Non-penetrative Sex, High School Student Protagonist, Doggy Style, Central Heroine, Outdoor Sex, Colored Texts, Colored Name-tags, Fingering, Siscon Protagonist, Cowgirl, Standing Sex, Sitting Sex, Butterfly, Unbeknown Incest, Hero with Gradient Colored Hair, Quickie Fix Position, Sex at School, Middle School Student Heroine, Single Buttjob, Straight Lolicon, High School Student Heroine, Protagonist's Older Sister as a Heroine ## More Games from Chuablesoft - [Pure x Cure](https://pinovel.net/v3755) - [Amanatsu -Aru Manatsu no Hajimete no Ohanashi-](https://pinovel.net/v252) - [Sugar+Spice!](https://pinovel.net/v421) - [Sugar+Spice! Party☆Party](https://pinovel.net/v422) - [Koibumi Romantica](https://pinovel.net/v2055) - [Sugar+Spice 2](https://pinovel.net/v3208) - [Sweet Robin Girl](https://pinovel.net/v5296) - [Astraythem](https://pinovel.net/v7423) - [Love La Bride](https://pinovel.net/v12028) - [Noblesse of Rouge](https://pinovel.net/v12482) - [Wagaya no Himegami-sama!](https://pinovel.net/v12981) - [Ano Harewataru Sora yori Takaku](https://pinovel.net/v15077) - [Zannen na Ore-tachi no Seishun Jijou.](https://pinovel.net/v15485) - [Watashi ga Suki nara "Suki" tte Itte!](https://pinovel.net/v17376) - [Anata o Otoko ni Shite Ageru!](https://pinovel.net/v18724) --- *View the full details at [pinovel.net/v7423](https://pinovel.net/v7423).* ```json {"@context":"https://schema.org","@type":"VideoGame","@id":"https://pinovel.net/v7423#game","name":"Astraythem","description":"I love my elder sister.. My love belongs to my elder sister... I'm in love with my elder sister... Sakurazuka Tsukumo has fallen in love. His beloved one i","url":"https://pinovel.net/v7423","image":"https://t.vndb.org/cv/45/101445.jpg","author":{"@type":"Organization","name":"Chuablesoft"},"aggregateRating":{"@type":"AggregateRating","ratingValue":"7.7","bestRating":10,"worstRating":1,"ratingCount":117}} ```