I don't get it, was Baki's win condition to prove that Yujiro wasn't literally perfect ?
I genuinely don't get Yujiro thought process.
I kinda get that his thirst for success led to to take on a challenge he was unlikely to win, but how is that enough to give Baki the title of the strongest ?
Or maybe it's because Baki showed him that there's more to life than fighting....?