not to make this worse but since this is a BDSM heavy story can't he just do what HES ASKING HIM TO DO like make the man bleed, use knives, tease a gun in his face, if he's asking for heavy masochism then why hold off dudes just getting slapped ofc he's gonna grow bored he wants to be literally knocked unconscious. im not even into BDSM like that but even I know this