"In order to defeat Inshun, you must do something with what you already have." Takezo's upbringing came from the mountains. He learned how to defend himself and how to be the aggressor when it came down to surviving. Now that he's older he can learn how to adapt to other strong forces through training more in the mountains. Patience, relaxing, not hesitating, these are the facets that Inshun used to really defeat Musashi in their duel. Hopefully Musashi learns it through his true master.