Otouto Wa, Ookami.弟は、オオカミ。; 弟弟是大野狼; 弟弟是野狼; สะดุดรักร้ายนายหมาป่า; My Brother is a Wolf; My Younger Brother is a Wolf; Otouto wa Ookami; Otouto wa, Ookami

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!?