OS System

A part of the virtual Internet that ordinary users are unable to access, it is located in the detest layers of cyTus. Only those who are immune to the ender virus are able to enter, where they can interact with files and data that are inaccessible to the average person.

Unlocking New Logs

Each playable character has OS logs that detail events which pertain or are tangential to that characters story. A few OS logs are initially unlocked and more may be unlocked through gaining experience and leveling up the character. When a character gains enough XP to level up, new logs may appear in their OS.

Gaining XP

After playing a song, that song's character gains XP based on the score achieved:^[1]

XP gain = 150 * (score / 1,000,000) + Bonuses

Bonuses are awarded as follows:

Completing a song's difficulty for the first time: 100 XP.
Achieving a Full Combo (50 XP for the first FC of that difficulty, 25 XP afterward).
Achieving a Million Master (50 XP for the first FC of that difficulty, 25 XP afterward).
Completing a song whilst a character is level 25 or above will reward an additional 100 XP.

Level Locking

At certain points in the game, a log will be locked, and can only be unlocked when the specified characters reach a certain level. When a character reaches the desired level, their level will be locked. That character can then no longer gain XP until the locked log is unlocked and opened. This serves to make sure each character progresses at the same pace and maintains story continuity.