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”

Director: Takumi Nakazawa
Original Work Draft: Takumi Nakazawa, Romeo Tanaka
Scenario: Takumi Nakazawa, Nobuaki Takerube
Screenplay: Nobuaki Takerube, Aoi Takashiro, Hiroyuki Oohara, Tomohiro Shin, Takumi Nakazawa
Character Designer: SOYOSOYO


Aoi Hinata: Hagi Michihiko
Ishtar: Takahashi Chiaki
{HE}: ???
Aoi Mutsuki: Nagata Kayo
Kawahara Sakuya: Tanaka Ryoko
Amane Yayoi: Yoshida Airi
Shinozuka Masami, Shinozuka Mayumi: Yoshizumi Kozue
LEM: ???
Enlil: Aida Sayaka
Ea: Yanase Natsumi
Ayase Mika: Fujisaki Kaori
Miyata Kosuke: Toriumi Kosuke


Translation: GundamAce (Routes A, D, E, D’, A’, E’), Blick Winkel (Routes B, C, E, C’, B’, E’)
Programming: Roger Pepitone
Image Editing: Bu-Bu San
Quality Checking: Kilicool64, GundamAce
Editing: DrMason, mp3, Blick Winkel, GundamAce
Video Editing: Blick Winkel
Crossword Puzzle Redesign: Roger Pepitone, Strafe King


Note: The following are bugs we were unable to fix. PLEASE READ THESE CAREFULLY BEFORE YOU PLAY TO AVOID SAID BUGS.

1. If you save a game on textbox 4 or more lines long, close the game, and reload it, the text display will not display properly if you reload on that save, but will be back to normal on the next save. To avoid this, please save only on textboxes that are 3 or fewer lines long.

2. If you save a game on a textbox 4 or more lines long and reload that save mid-game, the textbox will be “stuck” in that size until you come across a textbox that’s the same size or bigger than the current textbox, where things will then display normally again. To avoid this, please save only on textboxes that are 3 or fewer lines long.

3. If you try to click or press Enter during a continuous sound effect (a sound effect that “pauses” the text as it plays out), the game will crash. To avoid this, please do not press anything while a continuous sound effect is playing and wait for it to finish.

3b. However, there is one exception to the above rule- in the Route B’ scene “authentication”, there will be a bit where the sound of typing loops. To break the loop, click and the game will continue normally.

4. If you are using Windows XP, a bug will occur where the text will overlap during playing. There is no fix for this other than to upgrade your OS.


Patch 1.02

Patch 1.02: Script and image fix only (download if you’ve already downloaded the 1.0/1.01 patch)

Downloading instructions:

1. Download the patch folder or files and insert them into your I/O Revision II folder.

2. Extract the files. Allow “OP.dat”, “mov12.dat”, and “mov13.dat” to replace the old ones in your folder.

3. Click “io_r2_en.exe” to play.

NOTE: You MUST have you non-Unicode language set to Japanese to play the game.


(WARNING: Contains endgame spoilers- do NOT read unless you’ve completed the game!)

I/O Fanbook Explanation Translation (Part 1)

I/O Fanbook Explanation Translation (Part 2)

This is a translation of a section of the I/O Setting Explanation Fanbook, which helps explain some of the game’s more complicated mysteries.


Fragment (OP) Lyrics Translation

To The Moon (Insert Song) Lyrics Translation

Lead Out (ED) Lyrics Translation