From Tokyopop:

When the school's two biggest troublemakers get into a tussle, there's nothing left for them to do but fall in love! In Love Attack, you'll find a rollicking brawl of a good time as the roughest guy and girl in school get themselves into trouble--and find themselves in love.

Chiemi Yusa's high-school record is far from perfect. She's already been suspended twice for fighting, and she's not even half-way through her first year! In danger of getting expelled for starting yet another brawl, her teacher approaches her with an unexpected offer: get her classmate Akifumi 'Deranged Devil' Hirata, the nastiest fighter in the whole school, to clean up his act, and her record will officially be cleared. Reluctantly she accepts, and immediately goes on the attack. But as she's waiting for him to retaliate, she discovers that he has more in store for her than just a fight! From the creator of Girl Got Game and Heaven!! comes a rollicking brawl of a good time as the roughest guy and girl in school get themselves into trouble--and find themselves in love.

From the author:

Spoiler (mouse over to view) This is the story of how Hirata-san (whom Kyou met when she ran away in Vol.9 Ch. 32 of "Power!!") met his wife. It was supposed to end after one chapter, but somehow it was decided that it would be continued.

From Tokyopop:

Rinne is a girl who can see and exorcise ghosts (usually with a paper fan). When the school punk saves her from getting hit by a truck, but ends up in a coma himself, she, and his disembodied spirit must defend his prone body from being possessed by this, that, and the other local spirits. Unfortunately, she fails in her task, and an ancient playboy takes over the punk’s body, leaving him to inhabit a pink stuffed monkey. Hilarity ensues.

Kyo Aizawa's father is a basketball devotee but has been forced to quit playing his precious sport because of an injury. Instead of himself working his way up to the NBA, he feels that Kyo, his daughter should fulfill his dream. To give Kyo a good start in her career of basketball he enrolls her in Seishu High School which is known for two things: its extremely cute girls' uniforms and their boys' basketball team. Not only does unhappy Kyo have to pretend to be a boy during the day (the basketball team members all live at the school to boost the team spirit), she has to do it day and night. The super-star of the team, Chiharu Eniwa, may be a good-looking, basketball champion, but his attitude towards Kyo is hostile from their very first meeting. Poor Kyo ends up roommates with the evil Chiharu. As they get to know one another, both sense that the other has a secret.

From Dazzling Scans:
Hirata Mihane has a scary face and isn't ladylike at all. In fact, she lets her temper get the better of her and often lets out small bursts of violent behaviour—even though she doesn't mean to. Because of this, the entire school calls her a "Satsujinki" (murderous monster). Even so, she's in love with the kind and popular Touma-kun, who doesn't mind the way she looks and is always nice to her. But... will Touma ever see her as a love interest?

Spin off of Junai Tokkou Taichou! showcasing the romantic life of Hirata and Yusa's daughter.