Konoyo Ibun

In the immediate family of the story's protagonist, everyone seems to die early, and other relatives speak of a curse. After his grandfather's death, he soon falls ill with an incurable disease and is overwhelmed by grief and loneliness. In desperation, he recalls his grandfather's last words—that someone was watching over them. He finds only an odd fossil tooth where his grandfather had pointed, but when he picks it up and accidentally gets some of his blood on it, this summons a guardian spirit who promises to cure him. Perhaps he should be pleased, but this guardian has some peculiar methods for healing. (Source: MU) Included one-shots: Volume 1: Nylon Vinyl, Kami mo Hotoke mo Nai Mono ka Volume 2: Ishi Kenbunroku