Duped by a seemingly earnest summons from Tohko, Konoha is forced to spend his summer break at the Himekura villa writing snacks for her. But the shadow of a tragedy eighty years ago creeps up on them. "A young lady," "a student," and "a ghoul." The actors are all ready, the stage is set, and everything is headed toward destruction once again. Maki set it all in motion, but what is it that she hopes to achieve? What is the "secret" that jolts the Book Girl's heart with her own imagination?