The appearance of one person can offset an entire timeline. Changes, turns, twists. When that person doesn't exist in history, there's nothing that fate can do to try and 'right' what they have 'wronged' except to just let it happen. This is how timelines change and altered universes are created... Better known as: Musashi messes another timeline up, but in a fantastic way.

Musashi was a Ronin. A Ronin is a samurai without a master. Many believe a Ronin is an honorable figure. Miyamoto Musashi is the greatest swordsman to ever live; undefeated in 61 one-one-one duels. During Musashi's final days he created the Dokkodo, or, The Path of Aloneness. The Dokkodo includes 21 precepts for life.