Hikari is a new shinigami (god of death) at Yomi Castle and is doing her best every day to get used to her onerous duties. Her duties are to manage and fulfill the destinies of humans. The only thing that keeps her going is the kindness of her superior, Commander Ryouma. The akashic records that list human destinies are stored under tight security in the castle. But, when a disastrous event happens among the shinigami, everything changes...