Tokyo Butei High school--- It was a special school where armed detectives, also known as "Butei" are being brought up. Tohyama Kinji is a sophomore student who has the unique body which activates a "super mode" when it was stimulated by "something". He tries to hide it to others in order to live a peaceful life. But trouble came to find him when he became a victim of a bombing incident, where he met the Butei high "Assault" department elite, Aria H. Kanzaki.
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Notes

Alternative Names: Aria the Scarlet Ammo
Author: AKAMATSU Chuugaku
Artist: KOYOKA Yoshino
Genre: Action, Comedy, Ecchi, Romance, School Life
Demographic: Seinen
Adapted from light novel series/Adapté de la série de roman de lumière,
Adapted into the manga/Adapté dans le manga,

Seiyuu

Kugimiya Rie as Kanzaki H Aria, Majima Junji as Tooyama Kinji, Takahashi Mikako as Hotogi Shirayuki, Ise Mariya as Mine Riko, Kondou Takayuki as Mutou Gouki, Ishihara Kaori as Reki, Nojima Kenji as Sayonaki Tooru, Eguchi Takuya as Shiranui Ryou, Nakahara Mai as Yutori