Miharu Azuka, a shrimpy, studious middle-school student from Tokyo, attempts a shortcut one night through the graveyard to get home after a late night of cram school. While travelling through it, he encounters Kanzaki Heishiro (Heishiro, Kanzaki) and his "companions": a graveyard filled with ghosts. Kanzaki reveals himself to be a Soul of Mitsurugi, a medium between the world of the living and the world of the dead. Kanzaki also demonstrates Soul of Mitsurugi' ability to unite with ghosts to achieve a shared goal. Over the first few chapters, Kanzaki and Miharu become best friends while Kanzaki uses his soul abilities to help them out through various normal tasks.