Manga The Lackey and the Delinquent Leader in Love / パシリな僕と恋する番長さん

Unoki-kun, a boy who's been bullied since elementary school, ends up becoming the exclusive errand boy of the top delinquent of his school, Toramaru-san, who told him "Be mine" right after entering high school! But the truth is that Toramaru-san meant it as a confession of love!! This is the beginning of a love misunderstanding between Toramaru-san who thinks she's in a relationship and the beta Unoki who think he's being bullied.