After the great war ended with humanity's victory, the world suddenly gets "overwritten" right before the eyes of a boy named Kai.

A spy on an undercover mission gets married and adopts a child as part of his cover. His wife and daughter have secrets of their own, and all three must strive to keep together.

Takuma is an office worker who is taken care of and coddled by his senior team member Shiori, who is a gorgeous, profoundly kind, loving, and diminutive woman. Takuma certainly hopes that she's not doing it out of duty - but her joy of doing so increasingly exposes her feelings.

Komichi Akebi is starting junior high at the prestigious Robai Academy in the countryside. It's been her dream to wear a sailor-style school uniform and tomorrow her dream will come true.