
It's a yaoi where the seme is like dead inside and just fights relentlessly because he was ordered to or made to do it and the uke is either the trainer or something. They become roommates and the uke watches his meals and everything and they kiss one day in the front doorway but they get caught by one of the other fighters from the same gym the seme is from. There are some dark elements to the story. Also I remember there are scenes of the seme where there is two young versions of him and one is holding a remote controller that makes decisions and the other is sort of demonic/crazy.
https://www.mangago.zone/read-manga/gift_ichinose_yuma/
^i gotchu bestie, im p sure its this
I'ts Gift by Ichinose Yuma :)
https://www.mangago.zone/read-manga/gift_ichinose_yuma/
low-key was a super duper DUPER slow start and it was funny but kinda got boring but later on in the story it def got more interesting. I think it's a pretty good, enjoyable story to pass time and it's worth it to keep reading but not amazeballs yk. their dynamic is super cute to see tho esp embarrassed prince