"You were very good." Marvolo reaches over him and presses his fingers down on the will-be bruises. "And as I’ve told you: good boys get rewards." The rest unfolds simply, transfiguring the large plug to have a manipulatable hold, and then -- slowly at first before building -- fucking him with it. "Take hold of your ankles and pull them further up." Harry is nearly folded in half now, bare and twitching from his toes to his cock.