Certain things remain unsaid by people during their lifetimes; for these, there are "shigofumi," letters transported from the realm of the dead to the world of the living. When an individual with intense emotions passes away, they can generate a shigofumi, regardless of whether those feelings stem from love, longing, or resentment. It falls to the quiet and enigmatic Fumika to deliver these messages from the deceased. Accompanied by her talking magic staff, Kanaka, she ensures that every shigofumi reaches its intended recipient, even if that person wishes to avoid confronting its contents. Fumika observes the tragedies of both the living and the dead, witnessing their most profound secrets laid bare. However, the specifics of Fumika's own history remain obscure. Who was she before she became a carrier of shigofumi?