Winner Sinclair (ウィナー・シンクレア)
Background
He transfers to Karin's high school and falls in love with her at first sight, constantly making romantic overtures toward her. Despite being a vampire hunter, he does not know about Karin's true nature, as he is blinded by love and possibly also because he is not very bright.
As a child, he met a girl with whom he shared his first kiss. However, the girl he "kissed" was (unknown to him at the time) actually a younger Karin, who bit him and injected her blood into him.
