The protagonist of the story is you. You've joined the admired taiko performance group 'TEMPO DRUMS,' and today is the long-awaited debut on stage. Moreover, it's a live stream performance broadcasted worldwide! However... the moment you arrived at the theater, you completely lost all memory related to 'TEMPO DRUMS'... You won’t remember how to play the drums, how to wear the costume, or even the music for your debut performance! Can you make this debut stage a success? And thus, the story begins to link with the real world...