This horror spirit fantasy series follows the strange master-servant relationship between high-school girl Nanako Nishizaki and death god Ushiro Reiichirou, who captures the souls of the dying using mysterious methods and abilities. But the bright and positive Nanako doesn't want anyone to die.

In "a certain era" on "a certain continent," banal things are happening. The construction of "Large-Scale Leisure Facilities" has demanded that all the villages are to be evicted, but when these demands are denied, the village and its residents are obliterated. A boy named Chap once lived in tranquility, but that happiness soon came crumbling down. He decides to embark on a journey of revenge but soon falls madly in love with the king's daughter, Princess Melora. In order to fulfill her selfish wishes, he gathers his friends in order to overcome the impossible.