Grim and dry with a bit of a cruel streak, Katou is the Sensei of Class 2-D. The primary target of his abuse seems to be the mild-mannered Tani; the rivalry between 2-C and 2-D appears to extend to the teachers themselves. 

Tsukamoto Tenma is an ordinary 2nd year high school student who has fallen in love with one of her classmates, Karasuma Ooji. However, currently she is unable to confess her feelings to him. To make things worse, she found out that Karasuma is transferring to another school in a year. On the other hand, Tenma's other classmate, Harima Kenji (who is a delinquent) is also in love with Tenma. Not being able to confess his feelings, Harima gets depressed day by day.<br><br>
(Source: Anime News Network)

Continuing right where season 1 left off: Harima still likes Tenma but still runs into obstacles everytime he tries to confess his love to her. To complicate the situation, Class 2-D challenges class 2-C once again and there's a rumor floating around that Harima and Yakumo are dating as the school prepares for the cultural festival.<br><br>
(Source: Anime News Network)