Summary
Kouta is the sole son and heir to the Mikomori shrine in the little, redeveloping town of Tsumagoi-chou, which has been losing its appeal. The story takes place in a rural area. The shrine was not something he was interested in inheriting. Rather, he concentrated on his education with the goal of becoming a civil servant after graduation. After discussing the possibility of marrying a young girl, his widowed father abruptly vanished. Together with her younger sister Motoka, that girl Erina moved in with him. They were able to carry on with their regular lives with the assistance of his boyhood buddy Mio and a few shrine supporters. Erina once brought home a girl named Mai, who claimed to be his fiancée. After a series of events, Erina finally gave him the command to conceive her.