--- title: "Kono mama ja, Ane to Sex Shite Shimau!? -Are, Otouto yo, Ima Naka de Dasanakatta?-" description: "Hey, you're so defenseless, selfish and beautiful. Why...? Do you know my erogenous zones? Is this because you're my older sister? You woke me up and took off m" image: "https://t.vndb.org/cv/78/3278.jpg" --- # Kono mama ja, Ane to Sex Shite Shimau!? -Are, Otouto yo, Ima Naka de Dasanakatta?- ![Kono mama ja, Ane to Sex Shite Shimau!? -Are, Otouto yo, Ima Naka de Dasanakatta?-](https://t.vndb.org/cv/78/3278.jpg) **Alternative Title:** このままじゃ、姉とSEXしてしまう!? －あれ、弟よ、いま中で出さなかった？－ **Aliases:** このままじゃ姉とSEXしてしまう！？ あれ、弟よ、いま中でださなかった？ **Developer:** OLE-M **Release date:** Oct 30, 2009 **Platform:** Windows, DVD **Language:** English, Japanese **Rating:** 7.4/10 (104 votes) ## Description Hey, you're so defenseless, selfish and beautiful. Why...? Do you know my erogenous zones? Is this because you're my older sister? You woke me up and took off my clothes. What? I should wear my underwear. I've never kissed a girl. No, don't touch here. No...! [From [ErogeShop](http://web.archive.org/web/20090914145440/http://www.erogeshop.com:80/product_info.php/cPath/54/products_id/1013521)] ## Characters ### Kasuga Haruhiko (春日 晴彦) - **Gender:** Male - **Hair:** Brown - **Eyes:** Brown - **Personality:** Pervert, Friendly, Sister Complex, Flustered, Obedient - **Role:** Non-blood-related Brother, High School Student, Nameable, Transfer Student, Younger Brother - **Subject of:** Teasing, Stalking - **Engages in:** Massage ### Kasuga Aroe (春日 あろえ) "The School's Popular Girl" A high school girl one year younger than the protagonist. They attend the same academy. She has an easygoing, big-sister personality and is wildly popular with both boys and girls. Her athleticism is exceptional—so much so that various sports clubs passionately request her as a guest player. Conversely, academics seem to be a bit of a struggle for her. She's also a natural leader among the girls. She puts on a tough front and is prone to jealousy. She has a tendency to drop kick others. - **Gender:** Female - **Measurements:** Height: 159cm, Weight: 45kg, Bust-Waist-Hips: 89-58-86cm, E cup - **Birthday:** 25 March - **Hair:** Pink, Ahoge, Waist Length+ - **Body:** Pale, Tanline, Tanned, Big Breasts - **Clothes:** School Uniform, Thigh-high Stockings, Bikini, Slippers, Loafers, Naked Shirt, Oversized Clothing - **Personality:** Proactive, Modern Tsundere, Carefree, Tomboy, Brother Complex, Atashi, Violent, Childishly Violent - **Eyes:** Blue - **Role:** Full Sister, Transfer Student, Popular, Younger Sister - **Voiced by:** Azuma Karin ### Kasuga Asagao (春日 あさがお) “The Timid Yet Big-Breasted Older Sister” She has a quiet and shy personality. However, she can show a bold side when it comes to matters involving her younger brother. She likes the frilly maid-style apron dress uniform at her part-time job. But she feels quite reluctant about wearing it in public. Apparently, her glasses are just for show. She likes sweets in general, especially cakes and cream-based desserts. - **Gender:** Female - **Measurements:** Height: 165cm, Bust-Waist-Hips: 98-57-90cm, H cup - **Birthday:** 25 October - **Hair:** Twin Tails, Long, Wavy, Green - **Body:** Pale, Tanline, Tanned, Big Breasts - **Engages in:** Cooking, Stalking - **Clothes:** Mini-dress, Pajamas, Glasses, Gloves, Thigh-high Stockings, Bikini, Slippers, High Heeled Shoes - **Personality:** Deredere, Shy, Low Self-esteem, Sweets Lover, Docile, Brother Complex, Quiet - **Role:** Full Sister, University Student, Bisexual, Older Sister, Part-time Worker, Baker, Middle Sister - **Eyes:** Teal - **Voiced by:** Kuwagata Miho ### Kasuga Ayame (春日 あやめ) “The Kasuga Family's Erotic Beam Machine Gun” A queen of dirty jokes with outstanding proportions and beauty, possessing a rich charm. She takes pride in her erotic self and flaunts it. She often comes across as crude, sloppy, and careless. Playing with her younger brother's lower body is as natural as breathing. She only wears shoes with heels. - **Gender:** Female - **Measurements:** Height: 170cm, Bust-Waist-Hips: 92-58-90cm, G cup - **Birthday:** 25 May - **Hair:** Black, Long - **Body:** Pale, Mole, Nail Polish, Tanline, Tanned, Big Breasts - **Eyes:** Blue - **Clothes:** Miniskirt, Tank Top, Bikini, Bracelet, Towel, Decorative Belt, Thong Panties, High Heeled Shoes - **Personality:** Pervert, Selfish, Brother Complex, Atashi, Emotional, Blunt, Sloppy - **Engages in:** Drinking, Teasing - **Role:** Full Sister, University Student, Not a Virgin, Older Sister, Middle Sister - **Voiced by:** Kuwagata Miho ### Kasuga Botan (春日 ぼたん) "The Conscience of the Kasuga Family" A dependable person who managed all household duties for the Kasuga family while attending university. Gentle, kind, and devoted in nature. Slightly airheaded. When panicking, inexplicably switches to Tosa dialect. She loves to eat roasted sweet potatoes. - **Gender:** Female - **Measurements:** Height: 165cm, Bust-Waist-Hips: 92-58-90cm, G cup - **Birthday:** 25 June - **Hair:** Red, Shoulder-length - **Body:** Pale, Tanline, Tanned, Big Breasts - **Eyes:** Green - **Clothes:** Pajamas, Necklace, T-shirt, Jeans, Bikini, Hair Flower, Naked Apron, Slippers, High Heeled Shoes - **Role:** Full Sister, University Student, Older Sister, Middle Sister - **Personality:** Kind, Loyal, Serious, Honest, Brother Complex, Family Oriented - **Voiced by:** Kohinata Natsu ### Kasuga Himawari (春日 ひまわり) "Punibain Loli" The fierce bull boasting the largest breasts among the sisters, yet mistaken for a junior due to her petite size. She seems self-conscious about her childish appearance and oversized breasts. When dissatisfied, she puffs out her cheeks with a huff. - **Gender:** Female - **Alias:** プニバイン - **Measurements:** Height: 152cm, Weight: 40kg, Bust-Waist-Hips: 100-58-83cm, I cup - **Birthday:** 25 August - **Hair:** Ahoge, Twin Tails, Waist Length+ - **Body:** Pale, Tanline, Tanned, Big Breasts, Short - **Clothes:** School Uniform, Thigh-high Stockings, Bikini, Panties, Bra, Rubber Band With Beads, Choker, Loafers, Animal Pajamas - **Eyes:** Blue - **Personality:** Deredere, Idiot, Outgoing, Energetic, Protective, Brother Complex, Loud - **Role:** Full Sister, Younger Sister, Older Sister, Middle Sister - **Voiced by:** Aoba Ringo ### Kasuga Sumire (春日 すみれ) "The Intellectual Mystery" Cool-headed, dry personality with a brilliant mind. She's always reading thick books, occasionally flashing a mysterious smile. Bitingly sarcastic and sharp-tongued. Her cool demeanor and quick wit make her one or two steps ahead of her sisters. She often offers objective opinions detached from family matters. She has a habit of analyzing and explaining things. - **Gender:** Female - **Measurements:** Height: 166cm, Weight: 47kg, Bust-Waist-Hips: 89-58-90cm, E cup - **Birthday:** 25 February - **Hair:** Violet, Ponytail, Waist Length+ - **Body:** Pale, Tanline, Tanned, Big Breasts - **Eyes:** Green - **Clothes:** Pajamas, Earrings, Glasses, Necklace, Miniskirt, Bikini, Leggings, Slippers, Off-The-Shoulder Shirt, High Heeled Shoes - **Engages in:** Drinking, Sarcasm - **Role:** Full Sister, University Student, Bisexual, Older Sister, Middle Sister, Teaching Assistant - **Personality:** Smart, Perfectionist, Brother Complex, Insightful, Bookworm, Sharp-tongued, Blunt - **Subject of:** Massage - **Voiced by:** Kasumi Ryou ### Kasuga Tsubaki (春日 つばき) "The Lonely Diva" The top singer at the moment. She's in high demand across all media, enjoying tremendous success. Her rare beauty and voice have earned her the title ‘Angelic Voice.’ She's a tomboy yet confident. In truth, she's a woman of strong principles. She often appears haughty, but she holds firm convictions. She's actually a hard worker. She loves to eat whatever her younger brother cooks. - **Gender:** Female - **Measurements:** Height: 164cm, Bust-Waist-Hips: 90-56-84cm, F cup - **Hair:** Pink, Waist Length+, Wavy - **Body:** Pale, Tanline, Tanned, Big Breasts - **Personality:** Hard Worker, Tomboy, Serious, Confident, Brother Complex, Jealous - **Eyes:** Blue - **Clothes:** Miniskirt, Bikini, Peaked Cap, Sunglasses, Hair Flower, Crop Top, Slippers, Nightgown, Choker, Blazer, Knee-high Boots, High Heeled Boots, Large Hoop Earrings - **Role:** Full Sister, Idol, Actor, Popular, Famous, Younger Sister, Older Sister, Lonely, Middle Sister - **Engages in:** Singing - **Voiced by:** Azuma Karin ### Kasuga Yuri (春日 ゆり) "The Motherly Figure of the Kasuga Family" The headmistress of the academy the protagonist attends. A perfect, gentle adult woman and a quintessential Japanese lady. Towards her younger brother, she maintains a resolute demeanor while watching over him at the academy, yet at home, she spoils him excessively—a dual nature. She is extremely gentle and kind, rarely getting angry... - **Gender:** Female - **Measurements:** Height: 168cm, Weight: 49kg, Bust-Waist-Hips: 99-58-92cm, H cup - **Birthday:** 25 September - **Hair:** Violet, Bun, Long, Parted to Side - **Body:** Pale, Nail Polish, Tanline, Tanned, Big Breasts - **Eyes:** Green - **Clothes:** Dress, Earrings, Pantyhose, Skirt Suit, Slippers, Nightgown, Sling Bikini, High Heeled Shoes, Large Hoop Earrings - **Personality:** Deredere, Refined, Kind, Mature, Brother Complex, Family Oriented, Superstitious, Patient - **Role:** Principal, Yamato Nadeshiko, Not a Virgin, Bisexual, Older Sister - **Engages in:** Lactation, Bad Cooking - **Voiced by:** Kohinata Natsu ### Misasagi Ai (御陵 歩唯) "The Self Proclaimed Big Sister" A mysterious sister. She spotted the protagonist and started teasing him. She wants to be a good sister but she's quite the impulsive trouble maker who can't read the room. ”My little brother is mine alone, so there!" - **Gender:** Female - **Measurements:** Height: 160cm, Weight: 48kg, Bust-Waist-Hips: 92-59-88cm, H cup - **Hair:** Violet, Shoulder-length, Orange - **Clothes:** Jeans, Bikini, High Heeled Sandals, High Heeled Shoes - **Personality:** Deredere, Friendly, Mysterious, Brother Complex, Mischievous, Whimsical, Loud, Cheerful - **Role:** Non-blood-related Sister, University Student, Ane Act - **Body:** Nail Polish, Tanline, Tanned, Big Breasts - **Voiced by:** Aoba Ringo ### Nanase Shii (菜々瀬 椎) "A sister whose true identity is unknown. A honey trap" The mysterious sister. Outwardly, a computer programmer. Rumored to be a highly skilled agent in secret. Possessing the ruthlessness of a professional, yet now fighting with her life to protect her precious brother! Is she enemy or ally? She is incredibly good at hiding her presence. - **Gender:** Female - **Measurements:** Bust-Waist-Hips: 95-58-90cm, G cup - **Hair:** Blond - **Body:** Slim, Pale, Young-adult, Tanline, Tanned, Big Breasts - **Eyes:** Blue - **Clothes:** Catsuit, Jacket, Wristband, Belt, Bikini, Pareo, Crop Top, Cowboy Hat, Knee-high Boots, High Heeled Boots - **Personality:** Reserved, Protective, Mysterious, Insightful - **Role:** Bodyguard, Spy, Coder, Customizable Appearance, School Nurse, Ane Act ## Shops - [Official Website](http://www.teck.co.jp/ole/products/anesex/index.html) - [DLsite](https://www.dlsite.com/pro/work/=/product_id/VJ008754.html) - [Getchu](http://www.getchu.com/soft.phtml?id=660577) ## Releases ### Japanese - **2009-10-30**: Kono mama ja, Ane to Sex Shite Shimau!? -Are Otouto yo, Ima Naka de Dasanakatta?- - [Official website](http://www.teck.co.jp/ole/products/anesex/index.html), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=12816), [Getchu](http://www.getchu.com/soft.phtml?id=660577) - **2013-05-24**: Kono mama ja, Ane to Sex Shite Shimau!? -Are, Otouto yo, Ima Naka de Dasanakatta?- DVDPG - **2014-09-26**: Kono mama ja, Ane to Sex Shite Shimau!? -Are Otouto yo, Ima Naka de Dasanakatta?- Download Edition - [Official website](http://www.teck.co.jp/ole/products/anesex/index.html), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=12816), [DLsite](https://www.dlsite.com/pro/work/=/product_id/VJ008754.html), [Gyutto](https://gyutto.com/i/item130464), [Digiket](https://www.digiket.com/work/show/_data/ID=ITM0104324/), [DL.Getchu](http://dl.getchu.com/i/item1004869) ### English - **2013-04-01**: Kono mama ja, Ane to Sex Shiteshimau!? -Are, Otouto yo, Ima Naka de Dasanakatta?- - [Official website](http://web.archive.org/web/20141126082316/http://tlwiki.org/index.php?title=Kono_Mama_ja,_Ane_to_SEX_Shite_Shimau%21%3F) - **2023**: Kono mama ja, Ane to Sex Shite Shimau!? -Are Otouto yo, Ima Naka de Dasanakatta? - [Official website](https://sugoivisualnovel.up.railway.app/vns/2710) ## Tags ADV, Blood-related Brother/Sister Incest, Kuudere Heroine, Oneesan-type Heroine, Male Protagonist, Multiple Endings, Teacher Heroine, Idol Heroine, Modern Tsundere Heroine, Nameable Protagonist, Nukige, Protagonist's Non-blood-related Sister as a Heroine, Shy Heroine, Map Movement, High Sexual Content, Student Heroine, Under the Same Roof, Heroine with Sexual Experience, Adult Heroine, Big Breast Sizes Heroine, Student Protagonist, Dark Skinned Heroine, Arrogant Heroine, Unlockable Harem Ending, Perverted Protagonist, Energetic Heroine, Female Domination, Protagonist with a Face, Defloration, Side Portraits, More Than Seven Heroines, Super Deformed CGs, Heroine with Tan Lines, Only Protagonist's Sisters as Heroine(s), Skin Color Selection, No "Keep Voice on Click" Option, Non-twin Heroine Sisters, Heroine with Big Breasts ## More Games from OLE-M - [Oppai no Ouja 48 ~Nani mo Kangaezu Me no Mae no Oppai Zenbu Shabure!~](https://pinovel.net/v3356) - [Kono mama ja, Ane to Sex Shite Shimau!? -Are, Otouto yo, Ima Naka de Dasanakatta?-](https://pinovel.net/v2710) - [Senpai - Oppai - Kako ni Modori Pai ~Ano Hi, Ano Toki, Sex Shiteokeba Yokatta~](https://pinovel.net/v5272) - [Ore wa Tsuma Killer ~Tsuma 5nin, Musume 5nin, Oyakodon Okawari!~](https://pinovel.net/v8082) - [Mainichi Shabutte Ii Desu ka? ~1-Heya-Manyuu Kazoku~](https://pinovel.net/v11327) - [Saimin Class ~Joshi Zen'in, Shiranai Uchi ni Ninshin Shitemashita~](https://pinovel.net/v13901) - [Saimin Class Wonderful ~Joshi Zen'in, Shiranai Uchi ni Mata Ninshin Shitemashita~](https://pinovel.net/v18734) --- *View the full details at [pinovel.net/v2710](https://pinovel.net/v2710).* ```json {"@context":"https://schema.org","@type":"VideoGame","@id":"https://pinovel.net/v2710#game","name":"Kono mama ja, Ane to Sex Shite Shimau!? -Are, Otouto yo, Ima Naka de Dasanakatta?-","description":"Hey, you're so defenseless, selfish and beautiful. 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