Minami Hasaki

Minami is a happy-go-lucky guy. Minami likes to flirt with almost every girl in school. He even turns his interest in baking so, more girls like him. As Otome starts showing interest in other boys, Minami is surprised to find that this bugs him to have rivals for his sister's attention. Although he calls Otome an idiot or old hag, he really adores her and wants her to be with him forever. (Source: Wikipedia)