An endless worrywart of a high-schooler, Nakazaki Yuuki stumbles one fateful night into the governor spirit of the Seven Wonders, Tenko. At the school grounds steeped in midnight, she floated amidst dancing cherry blossom petals as she sonorously sent the these ominous words towards him. "Congratulations, thou hast been chosen as a new Seven Wonder of this school" and so in inheriting the position as a Seven Wonder, he ended up being provisionally registered by her. Thus, bewildered all the while, he proceeded to resolve the various incidents occurring in the school together with Tenko… The daily life of the boy who became one of the Seven Wonders continues, in this compelling modern-day mystery-fantasy!