Bakugou finds Izuku's autograph from All Might and gets jealous. Well, if he can't have one, he may as well ruin Izuku's too. OR, Bakugou fucks Izuku over All Might's autograph and makes him piss and cum on it, before pissing down Izuku's throat. Pre-arranged scene when they're married which is revealed at the end, but it is set in the middle-school era, but they are actually in their 20s. There's a comment about Izuku being a virgin - this is just for the scene.