LengthLong (30 - 50 hours)
Publishers Asgard (asugarudo) & GN Software
 Lemnisca Translations
 Tuna std.
LinksWikipedia (en), Wikipedia (ja), Wikidata, MobyGames, MobyGames, GameFAQs, HowLongToBeat, VNStat
Shops» US$ 69.90 @ PlayAsia


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"

Transhumanism 3.0 Protagonist Selection 3.0 Multiple Protagonists 3.0 Fighting Protagonist 3.0 Enforced Playing Order 3.0 Protagonist Gender Choice 3.0 Unlockable Event 3.0 Internet 3.0 Unlockable Protagonist 3.0 Mid-game Videos 3.0 Disappearance 3.0 Mystery 3.0 Unlockable Routes 3.0 Protagonist with a Sprite 3.0 Mesopotamian Mythology 3.0 Virtual Reality 3.0 Scenario Selection 3.0 Dream 3.0 Infodumping 3.0 Flashback 3.0 Bad Ending(s) 3.0 More Than Seven Endings 3.0 Mind Screw 2.9 Cyberpunk 2.9 Protagonist with Voice Acting 2.9 Hacker Heroine 2.9 Unlockable Choices 2.9 Hacking 2.9 Combat with Firearms 2.9 Flashforward 2.9 Corporations 2.9 Terrorism 2.9 Death of Heroine 2.9 Fighting Heroine 2.9 Protagonist with Multiple Personalities 2.9 ADV 2.8 Existential Crisis 2.8 Hacker Protagonist 2.8 Hacker Hero 2.8 Completion Status Indicator 2.8 Unlockable Bonus Content 2.8 Multiple Route Mystery 2.8 Personal Armed Combat 2.8 AI Heroine 2.8 Track Display 2.8 Identity Crisis 2.8 No Sexual Content 2.8 Female Protagonist 2.8 Built-in Encyclopedia 2.7 Alternate Dimensions 2.7 Male Protagonist 2.7 Orphan Protagonist 2.7 Cyborg Heroine 2.7 Unavoidable Death of Heroine 2.7 Cyborg Protagonist 2.7 AI Hero 2.7 Protagonist with Superpowered Side 2.7 Hard Science Fiction 2.6 Resurrection 2.6 Twin Tail Heroine 2.6 Death of Hero 2.6 High School Student Protagonist 2.6 Time Travel 2.6 Protagonist with a Face 2.5 Varying Ending Songs 2.4 Leader Heroine 2.3 Bad Endings with Story 2.3 Time Loop 2.3 AI Protagonist 2.3 Desperation 2.3 Playtime Counter 2.3 Homicide 2.3 Date Display 2.3 Secret Identity 2.3 Death of Protagonist 2.3 Apocalypse 2.2 Genetic Research 2.2 Orphan Heroine 2.1 Suicide 2.1 Osananajimi Heroine 2.1 Protagonist with Heterochromia 2.1 Depression 2.1 Albino Heroine 2.1 Brief NVL Scenes 2.1 Twin Sister Support Character 2.1 Superpowers 2.0 Pistol Combat 2.0 Early Branching Plot 2.0 Reverse Trap Heroine 2.0 Combat Capable Friends 2.0 Student Heroine 2.0 Revenge 2.0 Group of Friends 2.0 Clone Heroine 2.0 Surreal 2.0 Game Over 2.0 Scientist Hero 2.0 Philosophy 2.0 High Amount of Bad Endings 2.0 Strong Female Protagonist 2.0 Amnesia 1.9 Descriptions of Violence 1.9 Medical Doctor Heroine 1.8 Heroine with Glasses 1.8 Blind Heroine 1.8 Blood-related Sister Heroine 1.8 Romance 1.7 Heroine with Gothic Look 1.7 Life and Death Drama 1.7 Sacrifice 1.5 Villainous Heroine 1.5 Lesbian Heroine 1.5 Villainous Hero 1.3 Father Support Character 1.3 Heroine with Heterochromia 1.3 Brief Branches Only 1.0 Ending List 1.0 Christian Mythology 1.0 Villainous Protagonist 0.8 Genre Shift 0.8 Few Choices 0.7 Bloody Scenes 0.5


2006-01-2615+  I/O - First Press Limited EditionNon-freeCommercial1 DVDComes with an artbook, a rubber bracelet, and a solar powered flashcard. 2 
2006-01-2615+  I/O - Regular EditionNon-freeCommercial1 DVD 3 
2008-08-2915+  I/O revision IIFully voicedStory: Simple animationsNon-freeCommercial800x6001 DVDAka I/O -Director's Cut- (I/O -ディレクターズカット-).

- Additional story CGs.
- Added sprites for many minor characters.
- Includes bonus CGs.  
2014-02-2215+  I/O revision II (patch)FreewareInternet downloadFanpatch was removed due to translation group going official.
TBA  I/O (patch)FreewareInternet download  


Character summary

Protagonist Aoi Hinata
Protagonist He
Voiced by Hagi Michihiko
Protagonist Ishtar
Protagonist Ishtar
Main character Amane Yayoi
Voiced by Yoshida Airi
Main character Aoi Mutsuki
Voiced by Nagata Kayo
Main character Ea
Voiced by Yanase Natsumi
Main characterEnlil
Voiced by Aida Sayaka
Main character Isaiah Nagy
Voiced by Hagi Michihiko
Main character Izawa Nami
Voiced by Nagata Kayo
Main character Kawahara Sakuya
Voiced by Tanaka Ryouko
Main character Kawahara Tooru
Side character Andras
Voiced by Aoki Tsuyoshi
Side character Ayase Mika
Voiced by Fujisaki Kaori
Side character Chiquitita
Voiced by Oka Tetsuya
Side character Hiiragi Midori
Voiced by Kochi Tamako
Side character Igarashi Kousaku
Voiced by Koga Hiroyuki
Side character Inagaki
Voiced by Oka Tetsuya
Side character Lem
Voiced by Nagata Kayo
Side character Miyata Kousuke
Voiced by Toriumi Kousuke
Side character Shinozuka Masami
Voiced by Yoshizumi Kozue
Side character Shinozuka Mayumi
Voiced by Yoshizumi Kozue
Side character Wadatsumi Megumi
Voiced by Yanase Natsumi

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Popularity: ranked #218 with a score of 7.02

Bayesian rating: ranked #230 with a rating of 7.52


  I/O revision II

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