I’m looking for this bl manwha

It’s about this guy and he’s like always been ill. Then he gets a new heart cause he was in an accident, but that heart has a bunch of memories. He doesn’t have like he’s getting those memories from the guy with the heart ends up meeting this guy and he’s like brown and he has brown hair and they like like each other but the person who had the heart and the guy liked him the brown guy anyways the person that got the heart and the brown guy like each other. Also, it’s like an organization like a group. I forgot what they do but I think they’re like a mafia thing. The guy who got a heart has like is white with black hair.