Ooyama Takeru, a young ordinary guy with a perverted mindset, gets accepted into a school that, unknown to him, utilizes combat and magic. On his first day, he reunites with three people he hasn't seen in three years: Amaya Haruko, his childhood friend; Kushiya Inaho, a girl who claims to be his fiancée; and Himegami Kodama, a blonde who wants to kill him. Discovering that many girls there simply dislike him, he is informed that everyone at the school employs a special magic ability while wielding an item or weapon known as a Maken. Later, he finds that no Maken suits him and is unsure what to do, since students at this school engage in duels to demonstrate their magic and combat power—abilities he seemingly lacks. Included one-shots: Volume 15: Kanojo wa Muma de Irregular (She Is an Irregular Succubus) Volume 16: Gakuen Dragon Slayer (Highschool Dragon Slayer) [Story: Yamaguchi Mikoto] Volume 20: Ezaki-senpai, Komarimasu