Responses

This sounds so much like:
https://www.mangago.zone/read-manga/lucky_paradise/

maybe this? it's a one shot in chapter 5
https://www.mangago.zone/read-manga/i_m_banging_my_rival_from_a_parallel_world/uu/ibx_chapter-5/pg-1/
I don't remember the story but I remember the characters.
He refused the top many times. He is a bartender and chubby(fatman, yes). And the top is tan skin if i remember correct...