Kazuki and Seiji live together to save on costs and they've been friends their entire lives... or so it seemed. When Kazuki says he's gonna use an escort to experience his "first time", their relationship totally changes. Seiji says he's willing to help him and, for some reason, they become a couple! Kazuki knows that Seiji also hasn't done the deed, so he thinks Seiji just wants to prevent him from being the first to pop his cherry, but...