Souchirou Nagi and Bob Makihara are two delinquents who arrive at Toudou Academy with the objective of ruling over the school with their strength. But on their first day, they encountered the Jyuukenbu, a martial arts group of the school. Members of the group, Maya Natsume, her sister Aya, and Masataka Takayanagi easily overpowered Souchirou and Bob. And what's more, due to what was assumed to be their "connections" with the Jyuukenbu, the two were attacked by members of the Enforcement Group, which oversees the martial arts groups of the school. Drawn into the personal conflicts between the Jyuukenbu and the Enforcement Group, Souchirou and Bob have no choice but to join up with Maya Natsume's group and to hone their skills to become even stronger.

Picture	Name	Description
	Aya Natsume	A first-year student at the Todou Academy and Maya's equally busty younger sister. Like her brother Shin, she possesses dragon eyes, which gives her the ability to see anywhere in the past, present, and possible futures. In addition, it allows her to see and listen to dead, and learn from inanimate objects. So far, she has difficulty controlling it. Since the first time they met, she has devoted herself to becoming Souichiro’s wife, because she believes its fate and it follows the tradition of the Natsume women.[1] A rift is formed between the sisters when Aya learns that Souichiro claimed Maya to be his first love and Maya off-handed comments caused a division in the sisters' relationship. Throughout the series, she has increased her skill and dedication so she can support Souichiro in any way.
	Maya Natsume	The busty 17 year-old captain of the present Juuken Club. A third-year student, she can control her body by shrinking herself to the appearance of an 8 year-old. She had a previous relationship with Mitsuomi, but has now sworn revenge on him for the events surrounding the death of her older brother, Shin.
	Masataka Takayanagi	A second-year, polite boy who trains under Maya. He falls in love with Aya at first sight, but is crushed when she goes for Souichiro. He's an excellent, but often overlooked, martial artist, and can enter into a berserker rage when pushed too far. He is currently estranged from his older brother, Mitsuomi, because of his association with Maya.
	Souichiro Nagi	A self proclaimed hoodlum, and the heir of the Demon Exorcist family. A first-year student, he has been fighting his whole life because of being picked on, due to his lineage. Because of the way he looked and acted, he had little experience with women his own age, until high school. He has problems expressing his feelings toward people, often acting detached to the people he cares most about. His family has long been discriminated against from the lack of understanding by others, and the fact that their power can cause them to become extremely powerful and dangerous to society.
	Bob Makihara	Souichiro's friend, who is of African descent. It is unknown how he and Souichiro met. Naturally athletic, he fights using the Brazilian fighting style capoeira. Because of his ancestry, when he first arrived at Todou, some addressed him as "The Foreigner". He is the conservative one of the pair, and unlike Souichiro, he does not let his rage overtake him.