Oh, This is an easy one. Falco from the second Fist of the North Star series. After, Kenshiro delivers a fatal wound across his chest he then decides to travel to Asura to save Lin. Its made very clear that he is still injured at this point and is beaten by a nameless Asura. All of this could have been avoided if Ken and Falco left at the same time or Falco stayed behind and rest.
I also know they were equals at the time and if Falco lived longer he would have beaten the crap out of Han.
I also know they were equals at the time and if Falco lived longer he would have beaten the crap out of Han.