rize's feed

this may sound weird but i suddenly remember a smut (i forgot if it's straight or bl) where the guy was putting his balls in the girl/guys hole? not knotting or with his dick but just balls (literally LMFAO coz its bizarre to think bout it)

i know it happened to the demon & pink hair novel character girly but that's not it, i think it was different one

anyone knows it? thanks