Kyou kara Ore wa!!

Based on the same name manga by Itou Minoru, serialized in Kodansha's Weekly Shounen Magazine.

Tsubaki is a girl who loves making her younger sister's hair pretty every morning, but she doesn't think that kind of style suits herself! On the day of her High School Opening Ceremony, after she failed to be the top student (who usually makes the ceremony speech), she finds herself sitting next to the actual top student of the 1st years, the worst rude guy ever, Kyouta. Because of his saying bad things to her she purposely cuts his hair. Kyota requests that Tsubaki pay him back "with her body" but Tsubaki pays him back by fixing his hair and making it even shorter! Afterwards, Kyota unexpectedly kisses Tsubaki and swears he'll make her his woman.

The impulsive Yakuza Jouji was ordered by his boss to teach at a misfit-filled school. He now has to settle the score with a fated rival while falling head over heels for a colleague in the process.

Otokojuku - a private school for juvenile delinquents that were previously expelled from normal schools. At this school, Japanese chivalry is taught through feudal and military fundamentals. Similar to an action film, the classes are overwhelmed by violence. Only those who survive it become true men.