官方指南有繁體中文版本。 

我们发布了简体中文版的《游戏指南》。 

Gameplay guide is posted. 

日本語でのプレイガイドを掲載しています 

In the lobby you will be ready to start the game. For example - Pressing the C key to display the character change screen, or - Check the performance of your character in the shooting range, and - Check the timing of hitting the notes in the same shooting ...