Kanato has had something stirring in his cold heart lately... Everything Yui has been doing.. She looks... Different to him and he can't figure out why. Yui has been finding herself doing things all cute like trying to get Kanato's attention. She has started to notice how much he has grown up.. He's so different from his brothers.. His Aura.. The brothers quickly recognize their brother is about to go through what they call vampire puberty. It isn't something to be interrupted, but they can't let him have Yui all to himself... How faithful will Yui be when every single brother is trying to win her affection??? How will Kanato react when he realizes what they are up to???