Character selection - The first option after the prologue starts will branch into the family prologue of Scarlet, Viole, and Orange. After clearing the family prologue, select a character and proceed with the story Default name call function - When starting a new game, if you set the name of the protagonist as default (Yui Komori), the character will call you like your set name How to play the game - After the prologue, the story will progress by releasing the main story consisting of 15 episodes for each character Judgment system - Two choices appear once for each story of CHAPTER01-15. Depending on the option selected, the option of the white or black chess piece is displayed, and the board of the result screen changes at the same time. The ending changes depending on the number of final black and white pieces. The result screen can be checked at any time by calling the system menu while playing Scenario selection function - You can jump to the character scenario selection screen from the title screen or by calling the system menu and selecting CHAPTER. Once released, it is possible to play again at any time Illustration touch - When you touch the icon, some of the CGs displayed in the main part will play a voice along the scene. (This work is also possible to select by cursor operation)