Otouto wa, Ookami. My Brother is a Heartthrob

Synopsis

Beitofuku's father remarried a week ago and her step brother turns out to be the school's most popular guy, Aizawa Hiroki. Giving the appearance of a gentleman it turns out he's a huge playboy, trying to "capture" her to prove they can't be a family!? Included one-shots: Kimi Fechi, Kanzen Date Manual