---
title: "I/O"
description: "April 26th, 2032 A.D. - Megalopolis Tokyo - 00:12 in the morning  A total lunar eclipse occurs for the first time in 3 years. Even though it's supposed to be a "
image: "https://t.vndb.org/cv/45/7745.jpg"
---

# I/O

![I/O](https://t.vndb.org/cv/45/7745.jpg)

**Aliases:** アイオー

**Developer:** Regista Co.,Ltd.

**Release date:** Jan 26, 2006

**Platform:** Windows, PS2

**Language:** English, Japanese, Chinese (simplified)

**Rating:** 7.6/10 (936 votes)

## Description
April 26th, 2032 A.D. - Megalopolis Tokyo - 00:12 in the morning

A total lunar eclipse occurs for the first time in 3 years. Even though it's supposed to be a simple astronomical phenomenon, it soon sets off a series of unexpected events. Unexplainable mysteries, terrorist incidents, and network crime surge as if in unison. The truth mixes with lies, as if the world is awake but still sleeping. 

Something has begun. Somewhere no one can see. Something no one knows about.

This is a story of the chance meeting and tragic parting of the young men and women living in this world. Players get to play the game from 4 different points of view: 

Route A - Hinata, a youth who has lost his sister and himself. 
Route B - Ishtar, a freelance programmer and leader of a hacker team.
Route C - Ishtar, but seems a bit different from the Ishtar in Route B....
Route D - He, a man completely shrouded in mystery. 

And thus..

"The beginning is the end, and the end is the beginning"

## Characters
### Aoi Hinata (葵 日向)
Protagonist of Route A, a youth leaving his innocence behind.
2 years after the disappearance of his twin sister, Hinata leads a dull school life. Depressed and devoid of any goals, his life drastically changes after receiving a mysterious text message from his supposedly dead sister.

- **Gender:** Male
- **Birthday:** 17 March
- **Hair:** Spiky Bangs, Shoulder-length, Brown, V Bangs
- **Eyes:** Violet, Tsurime
- **Clothes:** Capri Pants, Jacket, Necktie, Wristband, Boots, Trousers
- **Subject of:** Benevolent Possession, Nightmares, Attempted Homicide, Clinical Depression, Headache, Amputation, Resurrection, Avoidable Death (obsolete), Time Loop
- **Personality:** Loner, Boku, Stoic, Apathetic, Smart, Protective, Honest, Docile
- **Role:** Twin Brother, Childhood Friend, Cyborg, High School Student, Superhuman, Tsukkomi, Older Brother
- **Engages in:** Skipping School, Time Travel
- **Body:** Teen, Slim, Pale
- **Voiced by:** Hagi Michihiko

### He (ヒィ)
Protagonist of Route D, a robust man.

The lone hacker of urban legends. His name and origin are unknown. Not leaving any traces has lead many to question his very existence.
[spoiler]Seeks vengeance for the death of his loved one, "He" desperately continues fighting against "that organization".[/spoiler]
[spoiler]He is voiced by Hagi Michihiko.[/spoiler]

- **Gender:** Male
- **Hair:** Spiky Bangs, Parted in Middle, Curtained, Short, Brown
- **Personality:** Mysterious, Ore, Stoic, Apathetic, Distrustful, Cold-hearted
- **Eyes:** Violet, Hidden, Hosome
- **Body:** Young-adult, Slim, Pale
- **Clothes:** Trench Coat, Jacket, Necktie, Gloves, Belt, Sunglasses
- **Items:** Handgun, Shotgun, Brass Knuckles
- **Role:** Hacker, Artificial Intelligence, Cyborg, Superhuman
- **Engages in:** Murder, Justifiable Homicide, Revenge, Time Travel
- **Subject of:** Survivor's Guilt, Resurrection, Avoidable Death (obsolete), Time Loop, Unavoidable Other Route Death, Amnesia

### Ishtar (イシュタル)
Protagonist of Route C, a young woman standing in solitude. 
She is searching for someone important.
Compared to Ishtar of Route B, she seems rather cold and aloof.

[spoiler]She is actually Shinozuka Mayumi, the sole member of "Criminal" left alive after Code's attack on eXarch's Tokyo Branch. She decided to assume Ishtar's image and personality after the original's death.[/spoiler]

- **Gender:** Female
- **Birthday:** 1 November
- **Hair:** Black, V Bangs, Spiky Bangs, Ankle Length
- **Eyes:** Brown, Heterochromia, Tsurime, Teal
- **Body:** Slim, Pale, Young-adult
- **Clothes:** Trousers, Earrings, Jacket, Boots, Collar, Sunglasses, Bracelet, Decorative Belt
- **Subject of:** Amnesia, Inferiority Complex, Avoidable Death (obsolete), Time Loop, Weak Memory, Survival
- **Items:** Handgun
- **Personality:** Pretending, Reserved, Relaxed, Cold-hearted, Loyal, Mature, Atashi, Curious, Third Person, Brave
- **Role:** Friend, Hacker, Alter Ego, Teammate, Cyborg, Superhuman, Coder, Gang Leader
- **Engages in:** Justifiable Homicide, Time Travel, Rebellion
- **Voiced by:** Takahashi Chiaki

### Ishtar (イシュタル)
Protagonist of Route B, a young woman followed by companions. 
The charismatic leader of hacker team "Criminal". She sports a cheerful personality, but is also an able people person, rightfully deserving her position and receiving her comrades' unconditional trust.

[spoiler]She dies at the end of Route B 1.0 at the hands of HE who, by accident, traps her in a hallway filled with toxic gas which kills her. Her consciousness escapes her body and manifests itself into sentient data ('Shadow Null'), alongside the rest of the Criminal gang.[/spoiler]

- **Gender:** Female
- **Birthday:** 1 November
- **Hair:** Black, Intake, Parted to Side, Ankle Length
- **Eyes:** Brown, Heterochromia, Teal
- **Body:** Slim, Pale, Young-adult
- **Role:** Orphan, Hacker, Coworker, Teammate, Artificial Intelligence, Cyborg, Superhuman, Coder, Mentor, Ghost, Hikikomori, Half-sister, Lonely, Video Game Developer, Imouto Act, Vigilante
- **Clothes:** Trench Coat, Earrings, Jacket, Cross Necklace, Thigh-high Boots, Belt, Gothic
- **Subject of:** Death, Resurrection, Time Loop, Asphyxia
- **Engages in:** Justifiable Homicide, Investigation, Self-sacrifice, Time Travel, Computering, Benevolent Possession
- **Personality:** Honorable, Cold-hearted, Kind, Naive, Protective, Mature, Mysterious, Atashi, Curious, Brave, Charismatic, Cheerful
- **Voiced by:** Takahashi Chiaki

### Amane Yayoi (天音 弥生)
School doctor of Kyoka Senior High School. Being one of the few people who [url=http://vndb.org/c1156]Hinata[/url] willingly associates with, she often acts as his confidant.

[spoiler]She is also Anu, the creator of net MMORPG "Babylon", and former leader of it's administering body "Anunnaki".[/spoiler]

- **Gender:** Female
- **Birthday:** 9 October
- **Hair:** Shoulder-length, Eye Covering, Claret, Spiky Bangs
- **Body:** Slim, Pale, Young-adult
- **Eyes:** Violet, Hosome
- **Clothes:** Earrings, Necktie, Shirt, Belt, Lab Coat, Court Shoes, Pendant Necklace, Skirt Suit
- **Personality:** Secretive, Relaxed, Kind, Strange, Wise, Watashi
- **Engages in:** Smoking
- **Role:** Coworker, Teammate, Cyborg, Superhuman, Coder, School Nurse, Video Game Developer
- **Subject of:** Avoidable Death (obsolete)
- **Items:** Cigarette
- **Voiced by:** Yoshida Airi

### Aoi Mutsuki (葵 夢月)
Age (at the time of her disappearance): 13.

Hinata's frail bodied twin sister. Prior to her disappearance, she had almost no social contacts apart from close family and tended to spend all her time with computers.

- **Gender:** Female
- **Birthday:** 17 March
- **Hair:** White, Antenna, Shoulder-length, Parted to Side, Parted in Middle
- **Body:** Teen, Slim, Pale
- **Role:** Student, Twin Sister, Hacker, Teammate, Cyborg, Superhuman, Gamer, Coder, Deity, Hikikomori, Homosexual, Younger Sister, Lonely, Criminal Accomplice, Video Game Developer, Runaway, Secret Girlfriend
- **Eyes:** Red, Tareme
- **Clothes:** Pajamas, Vest, Skirt, Swimsuit
- **Personality:** Shy, Low Self-esteem, Timid, Stubborn, Genius, Antisocial, Emotional, Bookworm, Watashi, Romantic, Superstitious
- **Subject of:** Clinical Depression, Mental Affliction, Confinement, Illness, Genetic Research, Avoidable Death (obsolete), Suspended Animation, Disappointment, Weakness, Disappearance, Nightmares, Infertility, Confinement in a Simulated Reality, Insomnia, Completely Avoidable Death
- **Items:** Stuffed Toy
- **Engages in:** Computering, Escape From Confinement, Daydreaming, Skipping School
- **Voiced by:** Nagata Kayo

### Ea (エア)
[spoiler]She was originally [url=http://vndb.org/c2438]Megumi[/url]'s Shadow. After the original's death, she became a Null.[/spoiler]

- **Gender:** Female
- **Hair:** Brown, Long, Wavy, Curtained, No Bangs, Parted in Middle
- **Body:** Teen, Slim, Pale
- **Role:** Villain, Artificial Intelligence, Antagonist
- **Eyes:** Green, Tareme
- **Clothes:** Dress, Boots, Ribbon Tie
- **Personality:** Cold-hearted, Refined, Stubborn, Superficial
- **Voiced by:** Yanase Natsumi

### Enlil (エンリル)
A mysterious stranger appearing in unexpected places. A person wrapped in mysteries.

[spoiler]Current head of net RPG "Babylon's" administering body and one of the game's founding members. Also the leader of terrorist organization "Code". Real name is Izumo Tsukasa.[/spoiler]

- **Gender:** Male
- **Birthday:** 14 July
- **Hair:** White, Long, Curtained, Eye Covering, No Bangs, Parted in Middle
- **Body:** Reverse-trap, Slim, Pale, Young-adult, Makeup, Androgynous
- **Engages in:** Fighting, Driving, Mass Murder, Duel, Attempted Murder, Vandalism
- **Eyes:** White, Hosome, Sanpaku Eyes
- **Clothes:** Suit, Cross Necklace, Shirt, Gloves, Boots, Sarashi
- **Items:** Katana
- **Personality:** Ore, Cold-hearted, Protective, Mysterious, Violent, Rebellious, Trans Man, Opposite Gender Voiced, Savior Complex
- **Role:** Hacker, Cyborg, Superhuman, Gang Leader, Antagonist, Terrorist, Video Game Developer, Revolutionary, Secret Girlfriend
- **Subject of:** Avoidable Death (obsolete), Time Loop
- **Voiced by:** Aida Sayaka

### Isaiah Nagy (アイゼーア・ナージ)
[spoiler]First of the imaginary children.
He hacked and stole from eXarch's bank account to fund his own electric brain operation and his trip to Japan in order to meet with Ereshkigal. Was caught and prosecuted, then locked to eXarch's research facility. 

Fed up with prison like life, he uploaded his consciousness to internet, then killed his body by frying his brain augments. Isaiah became the legendary hacker "He" after saving Shinozuka Mayumi from coma.[/spoiler]

- **Gender:** Male
- **Aliases:** Izaiah Nagy, Dilmun, ディルムン, Prophet Isaiah, 預言者イザヤ
- **Hair:** Blond, Spiky Bangs
- **Body:** Teen, Slim, Pale
- **Personality:** Boku
- **Engages in:** Suicide, Revenge, Theft
- **Role:** Boyfriend, Hacker, Spirit, Cyborg, Superhuman, American, Hungarian
- **Subject of:** Confinement, Resurrection, Muteness, Human Subject Research
- **Voiced by:** Hagi Michihiko

### Izawa Nami (井澤 奈美)
[spoiler]Ishtar's revered onee-sama. Left on a journey to find Isaiah Nagy's whereabouts. Former member of Anunnaki.
Also, the user of LEM (Una).[/spoiler]

- **Gender:** Female
- **Aliases:** エレシュキガル, Ereshkigal
- **Hair:** Parted to Side, Antenna, Waist Length+, Black
- **Eyes:** Blue, Tareme, Teal
- **Body:** Young-adult, Slim, Pale
- **Clothes:** Robe
- **Personality:** Watashi
- **Role:** Video Game Developer, Wife, Ane Act, Coworker, Cyborg, Superhuman, Coder, Mentor
- **Subject of:** Blindness
- **Voiced by:** Nagata Kayo

### Kawahara Sakuya (川原 朔夜)
Hinata's childhood friend and classmate, who pesters him to no end, much to Hinata's dismay. She offers her help when Hinata starts searching for Mutsuki's whereabouts. She has an obvious crush on Hinata.

- **Gender:** Female
- **Birthday:** 25 July
- **Hair:** Brown, Twin Tails, Curtained, Shoulder-length, Spiky Bangs, Parted to Side
- **Body:** Teen, Slim, Pale, Older Appearance
- **Clothes:** School Uniform, Mini-dress, Necktie, Shirt, Vest, Skirt, Shorts, Boots, Knee-high Socks, Thigh-high Stockings, Swimsuit, Turtleneck Shirt, Ribbon Tie, Clothing with Ribbons, Ribbon Hair Tie
- **Personality:** Proactive, Hotblooded, Deredere, Airhead, Friendly, Kind, Energetic, Protective, Loyal, Emotional, Jealous, Watashi
- **Role:** Orphan, Daughter, Girlfriend, Childhood Friend, Clone, Neighbor, Artificial Intelligence, Cyborg, High School Student, Non-blood-related Daughter, Deity, Half-orphan, Living Alone
- **Engages in:** Cooking, Teasing, Investigation, Escape From Confinement, Invisibility
- **Subject of:** Amnesia, Accident, Confinement, Resurrection, Survival, Human Subject Research, Disappearance, Infertility, Pre-Story Death
- **Eyes:** Amber, Tareme
- **Items:** Stuffed Toy
- **Voiced by:** Tanaka Ryouko

### Andras (アンドラス)
- **Gender:** Male
- **Hair:** Curtained, Shoulder-length, Grey, No Bangs, Parted in Middle
- **Body:** Slim, Pale
- **Role:** Villain, Cyborg, Superhuman, Antagonist, Terrorist
- **Eyes:** Grey, Hosome, Sanpaku Eyes
- **Clothes:** Glasses, T-shirt, Vest, Jeans, Belt
- **Personality:** Ore
- **Engages in:** Murder, Stalking
- **Subject of:** Avoidable Death (obsolete)
- **Voiced by:** Aoki Tsuyoshi

### Aoi Mitsuhiko (葵 光彦)
Hinata and Mutsuki's father.

- **Gender:** Male
- **Hair:** Brown, Curtained, Short, Moustache, No Bangs, Parted to Side
- **Eyes:** Brown, Hosome
- **Body:** Slim, Pale, Adult
- **Clothes:** Jacket, Necktie
- **Role:** Husband, Father, Scientist, Artificial Intelligence
- **Subject of:** Homicide
- **Engages in:** Genetic Research, Human Subject Research
- **Personality:** Watashi
- **Voiced by:** Misono Yukihiro

### Ayase Mika (綾瀬 みか)
Devoted member of the hacker team "Criminal".
Acts as the team's system coordinator. Always at loggerheads with Kousuke.

- **Gender:** Female
- **Aliases:** Magdalene, マグダレーン
- **Birthday:** 28 November
- **Role:** Antagonist, Roommate, Vigilante, Hacker, Teammate, Artificial Intelligence, Cyborg, High School Student, Superhuman, Gamer, Mechanic, Ghost
- **Hair:** Short Bangs, Hime Cut, Waist Length+, Asymmetrical Blunt Bangs, Brown, Blunt Bangs
- **Eyes:** Hazel, Tareme
- **Personality:** Misandrist, Sharp-tongued, Watashi, Childishly Violent, Stubborn, Serious
- **Clothes:** Glasses, Jacket, Necktie, Vest, Skirt, Boots, Beret
- **Items:** Handgun
- **Subject of:** Manipulation, Death in Battle, Survivor's Guilt, Confinement, Resurrection, Avoidable Death (obsolete), Stalking
- **Engages in:** Murder
- **Body:** Teen, Slim, Pale
- **Voiced by:** Fujisaki Kaori

### Chiquitita (ジキジータ)
[url=http://vndb.org/c15808]Inagaki[/url]'s virtual self in the Net RPG Babylon. [spoiler]Thanks to the AIO system, he can act on his own while Inagaki is offline.[/spoiler]

- **Gender:** Male
- **Aliases:** Inagaki, 稲垣
- **Body:** Young-adult, Slim, Pale
- **Clothes:** Fingerless Gloves, Glasses, Scarf, Vest, Cowboy Hat, Pin-Back Button, Holster, Belt, Bandanna, Blouse
- **Items:** Handgun
- **Personality:** Sessha, Archaic Dialect
- **Hair:** Short, Blond
- **Role:** Virtual Avatar, Artificial Intelligence
- **Eyes:** Brown, Hosome
- **Subject of:** Unavoidable Other Route Death
- **Voiced by:** Oka Tetsuya

### Igarashi Kousaku
- **Gender:** Male
- **Aliases:** Nergal, ネルガル
- **Eyes:** Black, Sanpaku Eyes, Hosome
- **Body:** Adult, Muscular, Tanned, Cleft Chin
- **Clothes:** Apron, Earrings, T-shirt, Sunglasses
- **Role:** Video Game Developer, Husband, Superhuman, Shopkeeper, Technician, Vendor
- **Hair:** Bald, Moustache, Brown, Sideburns
- **Personality:** Blunt, Ore, Stubborn
- **Subject of:** Allergies
- **Voiced by:** Koga Hiroyuki

### Kawahara Tooru
An eXarch employee and former member of the Babylon development team.

- **Gender:** Male
- **Aliases:** Nabu, ナブー, Kawahara Tohru
- **Hair:** Short, Goatee, Grey
- **Eyes:** Brown, Hosome
- **Body:** Pale, Adult
- **Role:** Villain, Father, Scientist, Engineer, Coworker, Cyborg, Superhuman, Antagonist
- **Clothes:** Suit, Glasses, Necktie, Lab Coat
- **Personality:** Narcissist, Protective, Watashi
- **Engages in:** Justifiable Homicide, Mass Murder
- **Voiced by:** Yamamoto Hirofumi

### LEM (レム)
An NPC of net RPG Babylon, and also its mascot.

- **Gender:** Female
- **Alias:** REM
- **Birthday:** 17 March
- **Hair:** Pink, Ahoge, Wavy, Ringlet, Parted to Side, Ankle Length
- **Body:** Teen, Slim, Pale, Pointed Ears, Tiny, Insect Wings
- **Clothes:** Dress, Collar, Cuffs, Brooch, High Heeled Sandals
- **Personality:** Airhead, Energetic, Mysterious, Mischievous, Third Person, Whimsical, Cheerful
- **Role:** Alter Ego, Artificial Intelligence, Fairy, Secret Identity, Fortune Teller, Mascot Character, Imouto Act, Virtual Avatar
- **Subject of:** Avoidable Death (obsolete)
- **Eyes:** Tareme, Teal
- **Voiced by:** Nagata Kayo

### Miyata Kousuke (宮田 浩介)
Kousuke is Criminal's only male member and often the butt monkey of other members' jokes. He is the only member without a brain chip and as such tends to handle "brute forcing" and other tasks which require less finesse. 

He has a strong sense of justice and acts as the team's "white knight in shining armor".

- **Gender:** Male
- **Aliases:** Eques, エクエス
- **Birthday:** 22 December
- **Hair:** Black, Short, Spiky Bangs
- **Eyes:** Brown, Tareme
- **Body:** Teen, Slim, Pale
- **Clothes:** School Uniform, Trousers, Jacket, Dog Tags, Torn Clothing, Decorative Belt
- **Engages in:** Cooking, Justifiable Homicide, Self-sacrifice
- **Personality:** Hotblooded, Ore, Idiot, Carefree, Funny, Food Lover, Old-fashioned
- **Role:** Son, Friend, Hacker, Teammate, Artificial Intelligence, High School Student, Butt Monkey, Vigilante
- **Subject of:** Resurrection, Death in Battle
- **Voiced by:** Toriumi Kousuke

### Ningirsu (ニンギルス)
- **Gender:** Male
- **Hair:** Black, Short, Sideburns, No Bangs
- **Body:** Young-adult, Muscular, Olive, Cleft Chin
- **Clothes:** Jacket
- **Personality:** Ore
- **Engages in:** Murder, Justifiable Homicide, Self-sacrifice, Vandalism
- **Role:** Superhuman, Gang Member, Terrorist
- **Eyes:** Itome
- **Voiced by:** Aoki Tsuyoshi

### Shinozuka Masami (篠塚 真佐実)
- **Gender:** Female
- **Aliases:** Sami, サミ, L, エル
- **Birthday:** 31 May
- **Hair:** Brown, Twin Tails, Shoulder-length, Intake, Spiky Bangs
- **Body:** Teen, Slim, Pale, Left Handed
- **Clothes:** School Uniform, Mini-dress, Headband, Miniskirt, Boots, Knee-high Socks, Thigh-high Stockings, Blouse, Turtleneck Shirt, Ribbon Tie, Clothing with Ribbons, Ribbon Hair Tie
- **Eyes:** Blue, Tareme
- **Personality:** Tsundere, Carefree, Friendly, Short-tempered, Smart, Energetic, Talkative, Brave, Watashi
- **Role:** Twin Sister, Hacker, Artificial Intelligence, Cyborg, High School Student, Older Sister, Vigilante
- **Subject of:** Inferiority Complex, Resurrection, Death in Battle
- **Engages in:** Flirting, Shopping
- **Voiced by:** Yoshizumi Kozue

### Shinozuka Mayumi (篠塚 真佑実)
- **Gender:** Female
- **Aliases:** Yumi, ユミ, R, アル
- **Birthday:** 31 May
- **Hair:** Brown, Twin Tails, Shoulder-length, Intake, Spiky Bangs
- **Eyes:** Brown, Tareme
- **Body:** Teen, Slim, Pale
- **Clothes:** School Uniform, Mini-dress, Headband, Thigh-high Stockings, Turtleneck Shirt, Clothing with Ribbons, Ribbon Hair Tie
- **Engages in:** Cooking, Justifiable Homicide, Computering, Reading
- **Personality:** Airhead, Shy, Low Self-esteem, Cautious, Clumsy, Docile, Third Person, Watashi
- **Role:** Twin Sister, Hacker, Cyborg, High School Student, Superhuman, Younger Sister, Vigilante
- **Subject of:** Inferiority Complex, Avoidable Death (obsolete), Eye Loss
- **Voiced by:** Yoshizumi Kozue

### Wadatsumi Megumi (綿津見 恵)
Uses the handle "Ea".
One of the "Three Founding Gods of Babylon", Ea is also a member of the said Net RPG's current administrative body, "E-Doc".
She is also Ishtar's former friend.
[spoiler]She was killed by [url=http://vndb.org/c1162]Enlil[/url] after refusing to cooperate with her.[/spoiler]

- **Gender:** Female
- **Aliases:** Ea, エア
- **Hair:** Brown, Long, Wavy, Curtained, No Bangs, Parted in Middle
- **Body:** Teen, Slim, Pale
- **Eyes:** Green, Tareme
- **Clothes:** Shirt, Boots, String Ribbon Tie, Sleeveless Dress
- **Personality:** Selfish, Relaxed, Refined, Watakushi, Quiet
- **Role:** Friend, Musician, Hacker, Coworker, High School Student, Superhuman, Coder, Ghost, Antagonist, Video Game Developer
- **Engages in:** Painting
- **Subject of:** Homicide, Betrayal
- **Voiced by:** Yanase Natsumi

### Aoi Himeka (葵 媛景)
Hinata's and Mutsuki's mother.

- **Gender:** Female
- **Hair:** Violet, Short, Parted to Side
- **Body:** Slim, Pale, Young-adult
- **Role:** Wife, Widow, Mother
- **Subject of:** Illness, Hospitalization
- **Eyes:** Pink, Tsurime
- **Clothes:** Blouse
- **Personality:** Watashi
- **Voiced by:** Matsuzono Rui

### Flauros (フラウロス)
[spoiler]Andras' younger sister[/spoiler]

- **Gender:** Female
- **Alias:** Frau
- **Hair:** Brown, Twin Tails, Shoulder-length, Spiky Bangs, Parted in Middle
- **Eyes:** Brown
- **Body:** Pale, Kid
- **Personality:** Proactive, Protective, Assertive, Superstitious
- **Clothes:** Vest, Hair Tie
- **Engages in:** Investigation
- **Role:** Younger Sister
- **Voiced by:** Kochi Tamako

### Hiiragi Midori (柊 みどり)
Sakuya's close friend and classmate.

- **Gender:** Female
- **Hair:** Brown, Short, Intake, No Bangs, Parted to Side
- **Eyes:** Brown
- **Body:** Teen, Slim, Pale
- **Clothes:** School Uniform, Headband, Clothing with Ribbons
- **Role:** Girlfriend, Friend, Classmate, High School Student, Superhuman, Gamer
- **Subject of:** Injury, Hospitalization
- **Personality:** Atashi
- **Voiced by:** Kochi Tamako

### Inagaki (稲垣)
Hinata and Sakuya's classmate. Plays the Net RPG Babylon under the name Chiquitita.

- **Gender:** Male
- **Hair:** Blond, Short, Slicked Back
- **Body:** Teen, Pale
- **Clothes:** School Uniform, Glasses, Necktie
- **Personality:** Ore
- **Role:** Friend, Classmate, High School Student, Superhuman, Gamer
- **Voiced by:** Oka Tetsuya

### Miyata Masayuki (宮田 政行)
Kosuke's father. A detective in the cyberforce. [spoiler]Following {Code}'s attack on {eXarch}, he is the sole survivor of {Code}'s culling of {Criminal} family members.[/spoiler]

- **Gender:** Male
- **Alias:** Investigator Masayuki
- **Hair:** Black, Long, Wavy, Stubble
- **Eyes:** Brown, Hosome, Shadowed
- **Body:** Pale, Adult, Underweight
- **Clothes:** Trousers, Jacket, Watch, Loose Necktie
- **Personality:** Ore, Stoic, Cautious, Sly, Sharp-tongued, Workaholic
- **Engages in:** Drinking, Smoking, Child Abuse
- **Subject of:** Clinical Depression, Survival, Grief
- **Role:** Widower, Father, Police, Detective
- **Items:** Cigarette
- **Voiced by:** Katsunuma Kiyoshi

### Shinozuka Takuya (篠塚 拓哉)
- **Gender:** Male
- **Aliases:** Professor Shinozuka, 篠塚博士
- **Body:** Overweight
- **Clothes:** Necktie, Lab Coat
- **Personality:** Friendly, Protective, Watashi
- **Subject of:** Accident, Death, Resurrection, Homicide
- **Role:** Father, Scientist
- **Voiced by:** Oka Tetsuya

### Sin (シン)
- **Gender:** Male
- **Hair:** Short
- **Body:** Pale
- **Personality:** Ore
- **Role:** Criminal, Superhuman, Terrorist
- **Subject of:** Death
- **Clothes:** Fingerless Gloves, Leather Jacket, Studs
- **Engages in:** Drug Trafficking
- **Voiced by:** Takahashi Shin'ya

### Tammuz (タンムーズ)
- **Gender:** Male
- **Hair:** Short, Goatee, Grey, Spiky Bangs
- **Eyes:** Brown, Hosome
- **Body:** Slim, Pale
- **Clothes:** Jacket, Turtleneck Sweater, Beanie
- **Personality:** Ore
- **Role:** Superhuman, Gang Member, Terrorist
- **Subject of:** Death in Battle
- **Voiced by:** Misono Yukihiro

## Shops
- [Official Website](http://www.asgard-japan.com/io/)

## Releases
### Japanese
- **2006-01-26**: I/O - First Press Limited Edition - [Official website](http://regista.co.jp/io/), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=6331), [PlayAsia](https://www.play-asia.com/13/70135n)
- **2006-01-26**: I/O - Regular Edition - [Official website](http://regista.co.jp/io/), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=6331), [PlayAsia](https://www.play-asia.com/en/13/70135m)
- **2008-08-29**: I/O revision II - [Official website](http://www.asgard-japan.com/io/), [ErogameScape](https://erogamescape.dyndns.org/~ap2/ero/toukei_kaiseki/game.php?game=11059)

### English
- **2014-02-22**: I/O revision II

### Chinese (simplified)
- **2020-04-30**: I/O revision II - [Official website](https://weibo.com/1481472891/IFKuxsPGi)

## Tags
Superpowers, Identity Crisis, Mystery, Personal Armed Combat, ADV, Combat with Firearms, Pistol Combat, Corporations, Fighting Heroine, Romance, Hacker Heroine, AI Heroine, Cyborg Heroine, Male Protagonist, Female Protagonist, Protagonist with Voice Acting, Multiple Protagonists, Fighting Protagonist, Future, Slice of Life Comedy, Enforced Playing Order, Amnesia, Descriptions of Violence, Bloody Scenes, Life and Death Drama, Suicide, Father Support Character, Early Branching Plot, Reverse Trap Heroine, Heroine with Glasses, Protagonist's Childhood Friend as a Heroine, Protagonist's Blood-related Sister as a Heroine, Mesopotamian Mythology, No Sexual Content, Secret Identity, Future Japan, Time Travel, Alternate Dimensions, Psychological Problems, Blind Heroine, Protagonist with Multiple Personalities, Detective Work, Suspense, Combat Capable Friends, Interdimensional Odyssey, Twin Sister Support Character, Time Loop, Existential Crisis, Villainous Protagonist, Brief NVL Scenes, Student Heroine, Virtual Reality, Revenge, Terrorism, Hacker Protagonist, Apocalypse, Unlockable Routes, Heroine with Heterochromia, Lesbian Heroine, Heroine with Gothic Look, Love Overcomes All, Hacking, Multiple Route Mystery, Protagonist Selection, Duel, Leader Heroine, Food Discussions, Unique Routes, Depression (obsolete), Medical Doctor Heroine, Bad Ending(s), Flashback, Cyberpunk, Infodumping, Genre Shift, Protagonist with a Face, Orphan Heroine, Flashforward, Group of Friends, Orphan Protagonist, Genetic Research, Death of Heroine, Playtime Counter, Track Display, Desperation, Twin Tail Heroine, Bad Endings with Story, Game Over, Christian Mythology, Protagonist with Heterochromia, Albino Heroine, Death of Protagonist, Death of Hero, Date Display, Buddhist Mythology, AI Hero, AI Protagonist, Resurrection, Villainous Heroine, Villainous Hero, Scientist Hero, Philosophy, High Amount of Bad Endings, High School Student Protagonist, Unlockable Choices, Built-in Encyclopedia, More Than Seven Endings, Sacrifice, Dream, Protagonist with Superpowered Side, Homicide, Slapstick, Mind Screw, Internet, Few Choices, Ending List, Mid-game Videos, Hacker Hero, Multiple Credit Rolls, Scenario Selection, Transhumanism, Unlockable Bonus Content, Strong Female Protagonist, Protagonist with a Sprite, Cyborg Protagonist, Disappearance, Drastic Character Development (positive), Unlockable Protagonist, Unavoidable Heroine Death, Unlockable Event, Confinement in a Simulated Reality, Completion Status Indicator, Amnesiac Protagonist, Transgender Support Character, Rabbits, Programmer Protagonist, Brief Branches Only, Clinical Depression, Hard Science Fiction, Thriller, Varying Ending Songs, Surreal, Rain, Clone Heroine, Psychological Horror

## More Games from Regista Co.,Ltd.
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- [I/O](https://pinovel.net/v96)
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---
*View the full details at [pinovel.net/v96](https://pinovel.net/v96).*

```json
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```