This is three months after the Agawa investigation. The SPR has been called to investigate strange happenings at a boarding school/orphanage. The case was brought to them first by a mysterious letter claiming to be written from a dead person, then by a councillor representative of the orphanage school. Upon investigating, things are not what they seemed to be.

An unlikely pair forms an unlikely friendship. Masako Hara encounters a lingering spirit and despite herself finds herself drawn closely toward him, and ultimately, his living brother.　The bond that forms between the living and the dead will shape everything she knows about life, friendship, and love.