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
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