A young girl idolizes the world-renowned S-ranked butei Kanzaki H. Aria and plans to follow in her footsteps. However, her test grades her out as only an E-rank! All is not lost, however, as Aria agrees to give her some pointers. Can Aria help this newcomer become a first-rate butei?

Tokyo Butei High School - a special school where armed detectives, also known as "Butei" are trained. Tohyama Kinji is a sophomore student who has a unique body which activates a "super mode" when stimulated by "something." He tries to hide it from others in order to live a peaceful life. But trouble finds him when he becomes a victim of a bombing incident, where he meets the Butei High "Assault" department elite, Aria H. Kanzaki. ___ [See AnimeNewsNetwork for the anime.](https://www.animenewsnetwork.com/encyclopedia/anime.php?id=11451)

Seiji Harada usually avoids girls due to the fact that he believes that they are the source of all problems. As he enters his high school years, he is forced to join an all-girl school that recently began admitting male students. Now surrounded by all girls, he begins to realize that all members of this high school possess special powers, including himself