Conversation so far:
What was the philosophy of Miyamoto Musashi?
Miyamoto Musashi was the founder of the Niten-Ichi-Ryū-School or Nito-Ichi-ryū style of swordsmanship.
Do all of Miyamoto Musashi's philosophies relate to war?
Musashi seems to take a very philosophical approach to looking at the craft of war“
What is an interesting aspect of Miyamoto Musashi's philosophy?
Miyamoto Musashi implies that the way of the Warrior is that of somebody who has made mastery of many art forms away from that of the sword

Question: Does the article tell if he was proficient in sado?
Self-contained rewrite: Does the article tell if Miyamoto Musashi was proficient in sado?