The familiar "Sudoku" has become a healing game. A total of 300 questions on EASY, NORMAL and HARD difficulty have been recorded. You will be healed with game effects and background music while you're undressing. The background effect and BGM will unlock as you clear the problem. There are 3 background effects and 3 tracks of BGM. It is possible to interrupt even time-consuming problems, You can play continuously anytime and anywhere. It supports touch operation. Like a smartphone app, you can play casually with touch operation.