When Mai falls ill and dies, Kota blames her cat. Kota intends to leave the cat for dead, but Momo--a shinigami or "death god"--allows him the chance to speak with Mai once more.
Mitsuki Asano is a normal high school student until Momo informs him that he will soon die.
Kantaro Ichihara's grandfather has passed away. While he cleans his grandfather's room, he finds instructions to uncover a treasure.
Chiaki Kazama tries to fill the shoes of her mother after she passes away. Momo gives her a way to speak with her mother one last time.
Eko Miyazaki seeks Kota's help so he can tell his deceased sister goodbye once and for all.
Sakura Kisakai wakes up dead. When she returns to the place where she died, she meets Momo.