Fist of the North Star with a twist

Raoh decides to leave Yuria and Ken alone, to live happily ever after. And then moves to take the world.

With no motivation for Ken to travel and grow as a fighter (In fact, assume they settle down in a remote, secluded location off the map), how does Fist of the North Star progress.

If Kenshiro didn't get beaten by Shin he would've been easy pickings for most of the top tiers in FotNS, his ruthlessness was a very fundamental amp to survive in that world. So if he ever came to action he'd be beaten eventually.

I don't think Yuria could've left Raoh to conquer the world given she was the Geneal though.The events would've eventually played similarly to how they went.