A contender might be Prince Richard from In the Doghouse, but I think it's still a vaaaaast gap (tho with his insane masochist tendencies, he might enjoy body swapping and getting fucked if given the chance)
I think he's already okay with pegging he's the freak of freaks
How about being pegged by his own male body tho? Gi Tae is so freaky istg
i swear to goddd LMFAOO honestly i need to see kitae getting pegged by serin
No smut ML has come this close to Gi Tae's freak: To be able to handle body swapping into a woman's body, be fucked by his male body IN PUBLIC, lick his tits, moan his own name, and then moan the woman fucking him in his male form