The man is diagnosed from a young age with an incurable disease that threatens to shorten his life span considerably. This would then rob him of the title of Hokuto Successor. Did he !@#$ and moan? No. When Kenshiro ran off with the woman he also loved, did he pout? No. He helped lead them to a fallout shelter while staying behind to lock the door. Following that, he was blasted with radiation ON TOP of the disease he has. The man was a walking time bomb before, and now that time bomb just has its fuse cut even shorter.
Actually, in the original manga, Toki didn't contract a disease that cost him his title as successor. It was all nuke. Never refer to the side stories that were recently made for story purposes.
Q- if Satan is the prince of darkness, who's the king? A- UbberDevil, and Sparda is my Queen. GT: MongooseDave2