To protect the man who saved you, the only family you have, is an honor. You would do anything and everything within your ability to do so. You've spied for him, you've delivered his messages, you've killed for him. There is nothing you wouldn't do, so when you caught the whispered rumors of a man treading through Japan on a path of destruction and murder headed straight for your father you knew something had to be done. You'll stop this beast on it's path, and get to him before he can even lay a finger on your father. You'll stop this blue eyed demon no matter the cost.