After the events of Amiba's death, Kenshiro explains the truth about, Toki and the story behind how Kenshiro became successor to Hokuto Shinken as it turns out in the fallout of the nuclear war Toki gave his all to not just save Kenshiro but a mother and her children 

bathed in the ashes of death, Toki chooses to give up his position as the successor to Hokuto Shinken hoping to help as much People as he can, but where is Toki now? Mamiya searches for the answers in episode 37 of Fist of the North star!