The idea of Vincent having secret ice powers sounded really cool. Though, me personally I like to think Vincent would be more subtle when killing off his friends if he was the yandere, like poisoning all of his friends with the poison he obtained after his father's passing. (if you know you know) or at least killing them off in ways that you wouldn't think he was behind all of this until it's too late. can't wait to see future developments with the boys.