Taidama Otori Komichuu desu

Watanuki-kun is a problem child who is always late. Wano-san, the student council president, is a serious girl who takes care of all the trouble in the class. The two of them don't have much in common, but Watanuki-kun finds out that Wano-san has a crush on their teacher Tsuji! (Source: Shueisha, translated)