[ it seems those are the right words to say, because whatever thoughts he had of just teasing him, still, are gone in that instant. He licks his lips as he looks at him, and leans in to kiss at his cheek, surprisingly gentle, before he moves, straddling him as he brings his hands to his own pants to undo them and pull them down enough to free his cock ]

Who's being a good boy now, huh?

[ he brings one hand to Deku's head, while his other moves to his cock to guide it against his lips - giving him just enough warning, expecting him to part his lips for him ]