He has a woman who truly loves and protects him, he has a sensei mentor, he has strong and reliable friends. And there is also the land, the city, the people he must protect. And to do that, he has to find an enemy. Find and destroy.
Enemies change: bandits, politicians, soul-eaters from totalitarian sects… But as long as he is alive, he will destroy them. Still, God grant him not to cross the line beyond which the greatest Evil will become… himself.