The minister's aide has an idea, a project in mind to help correct the declining birth rates in Japan. This plan, so to speak, has... more>> it where Japan's youth are encouraged to form relationships. The catch is that at the chosen high school for the initial test of this is being held, the project is mandatory - the students must become intimate couples with the other students or they will die. <<less

Fuuma Kotaro, a ninja, is a Kagemusha (body double) for Houjou Ageha, a princess. He masquerades as her when they go to school.