Hana to Harinezumi(2012)

Hana to Harinezumi

Tsukasa is the student council president, and he's very attractive. However, while girls love his looks, he's really unsociable. Lately, he's been showing up at school with wounds on his face. One day, Asada Hana, who has a big crush on Tsukasa, decides to follow him. She learns that he is secretly trying to befriend a stray dog he found, and it bites him a lot. Will this shared secret help Hana get closer to her crush?

(Source: MangaHelpers)