Do let me know if u find this..
The Bottomless Pit
https://www.mangago.me/read-manga/the_bottomless_pit/
https://www.mangago.me/read-manga/willow_love_story/
I don't think it's this one but it has a similar plot so maybe you'll like it?
these r nice but its not either, the seme is some gruff nd tough looking guy and is an absolute ass, bullying and all
I m definitely sure you are looking for this one i remember this plot for some reason --
https://www.mangago.me/read-manga/kowarekake_no_omocha/
yeaaaa this one, i searched a lot for it, thnks lots
Actually it's kinda good i remember it fully cuz it was my starting days yaoi manga .. welcome
so i read this manga like looooong back. its like a twisted bl where this rich guy has this 'friend' grow up with him since he was a kid, like a toy he can play with. like this other kid is there just for this rich kids entertainment and it goes into his head or smtg, and then they grow up and this rich kid likes to do sexual stuff towards this boy-toy now, and the poor kid wants to leave this, but some stuff happens so then he realises hes forever stuck to this rich kid since he's groomed that way? idk sounds familiar to anyone?