My Little Monster Tonari no Kaibutsu-kun

Standoffish, reclusive Shizuku Mizutani cares far more about earning stellar grades than cultivating friendships. But her opinions on friendship and relationships begin to change when she meets habitual truant Haru Yoshida, who happens to have a rather fearsome reputation. Like Shizuku, Haru’s reputation has made it difficult to make friends. And yet through their budding friendship and stirrings of attraction the unlikely pair learns to understand one another, the world around them, and the tenor of their own emotions.

(Source: Sentai Filmworks)