Tsubasa, a second-year high school student, is left at a loss after his family's fitness gym goes out of business. Just when he doesn't know what to do next, Maria—the chairwoman of Angel Academy and a regular at the gym—invites him to enroll as a special scholarship student.

Now living in the school dormitory, Tsubasa is asked by Maria to take care of the seven girls who also reside there. Although he's given a strict condition—he'll be expelled if he does anything inappropriate—he soon finds himself constantly at the mercy of these "slightly complicated" girls who each have their own quirks...