Once upon a time, there were a guardian deities named Kogimi, a cat god of the Otou family, and Ichirimaru, a serpent deity of the Mizuhama family, and they held a ceremony called the "Seven Day Marriage" every 100 years. Kazuki and Ousuke, who were chosen by the gods, will honor them as they re-enact this ceremony. Everything was supposed to be an imitation. The wedding, the first night, the kiss... A Japanese-style fated love depicting a bitter and sweet connection!