Three boys: Yuuichi, Takidani and Abiko. Three girls: Nagisa (Yuuichi's little sister), Kanami and Youko. This is the story of complicated feelings and love triangles between these six students during their last year in high school, as they discuss and settle down about their future, specially love.

The story revolves around Takuro Hayami who transferred to the mostly female Saint Arcadia School. Seemingly all of the girls want to have sex with him because the school only recently started admitting male students. Takuro seems like a normal student, but what the girls later realize when they try to take advantage of him is that he has a secret. Takuro has an “Ultimate Sex Power” that becomes the focus of St. Arcadia’s sexual power struggle.