Middle school teacher Takagishi Akemi's interest is piqued by a boy who stands alone in the classroom. With sad eyes, he stays away from the others. His name is Saitou Yakumo. There is a rumor that he can 'see ghosts' so his classmates alienate him. Akemi tries her best to understand this lonely boy, but… the imminent shadow of the terrible incident, the utmost tragedy that awaits – how does Yakumo react!? Yakumo's surprising past as told by Isshin makes Haruka cry – revealing his past, which was shrouded in mystery, a novel about Yakumo's shocking childhood.

A prequel to the Shinrei Tantei Yakumo series.