it was about this loan shark who was making this dude have sex with him because he wasn't paying enough I think? he starts falling in love with him and I think there was a sex scene in a car? the guy that owes him money lives with his grandmother and little sister maybe? I don't exactly remember but I really want to find it.
The closest I can think of is this:
http://www.mangago.zone/read-manga/goriyou_wa_keikakutekini/
I'm trying to remember a yaoi I read a while ago where the seme is a girl that was childhood friends with the uke but somehow got turned into an man. At first the uke is unsure, but eventually they fall in love. Then we find out that the seme isnt actually the childhood friend, but her brother that always had a crush on the uke(?). There is also a secondary couple, the uke is a friend of the mc uke from school and has a crush on the ml seme. I hope this makes sense, somebody plz help me identify, I never finished it and cant find it anywhere. Haha. :3
not sure, kinda similar tho
https://www.mangago.zone/read-manga/youjin/
Yes! That's totally it thank youuu!
glad i can help ^^