Manhwa I got to find. A young doctor boy he is the son of a demonic doctor (his mum) and a heavenly doctor (dad) parents taught him to heal using both techniques. And there was a old man that needed healing and he helped in a secluded house, found out that man is important in the Mirum world and he gets more of his friends to get healed especially the one with a bald head (whenever he sees blood he goes berserk) and a woman who can’t speak and produces ice.
there's this manga where the mc was driving his work colleagues and they got into an accident and was isekai'd into the marital art world and then his colleagues blamed him but them these masters or powerful beings started to take his colleagues to be their disciples and immortal. Two remain him and his manager I think however his manager ended up having martial art talent went younger due to body transportation or recomp and was powerful but the mc growth was very slow compared to him. and he just kept turning back in time

Sorry but I got ptsd and paranoia from January when everything got wiped out