Miyamoto Musashi (Gong Ben  Wu Zang , c. 1584 - June 13, 1645), also known as Shinmen Takezo, Miyamoto Bennosuke or, by his Buddhist name, Niten Doraku, was a Japanese swordsman, philosopher, writer and ronin. Musashi, as he was often simply known, became renowned through stories of his excellent and unique double-bladed swordsmanship and undefeated record in his 61 duels (next is 33 by Ito Ittosai).
I have trained in the way of strategy since my youth, and at the age of thirteen I fought a duel for the first time. My opponent was called Arima Kihei, a sword adept of the Shinto ryu, and I defeated him. At the age of sixteen I defeated a powerful adept by the name of Akiyama, who came from Tajima Province. At the age of twenty-one I went up to Kyoto and fought duels with several adepts of the sword from famous schools, but I never lost. According to the introduction of The Book of Five Rings, Musashi states that his first successful duel was at the age of 13, against a samurai named Arima Kihei who fought using the Kashima Shinto-ryu style, founded by Tsukahara Bokuden (b. 1489, d. 1571). The main source of the duel is the Hyoho senshi denki ("Anecdotes about the Deceased Master"). Summarized, its account goes as follows: In 1596, Musashi was 13, and Arima Kihei, who was traveling to hone his art, posted a public challenge in Hirafuku-mura. Musashi wrote his name on the challenge. A messenger came to Dorin's temple, where Musashi was staying, to inform Musashi that his duel had been accepted by Kihei. Dorin, Musashi's uncle, was shocked by this, and tried to beg off the duel in Musashi's name, based on his nephew's age. Kihei was adamant that the only way his honor could be cleared was if Musashi apologized to him when the duel was scheduled. So when the time set for the duel arrived, Dorin began apologizing for Musashi, who merely charged at Kihei with a six-foot quarterstaff, shouting a challenge to Kihei. Kihei attacked with a wakizashi, but Musashi threw Kihei on the floor, and while Kihei tried to get up, Musashi struck Arima between the eyes and then beat him to death. Arima was said to have been arrogant, overly eager to battle, and not a terribly talented swordsman.
what was first duel?
at the age of thirteen I fought a duel for the first time. at the age of thirteen I fought a duel for the first time. My opponent was called Arima Kihei, a sword adept of the Shinto ryu, and I defeated him. Musashi states that his first successful duel was at the age of 13, against a samurai named Arima Kihei My opponent was called Arima Kihei, a sword adept of the Shinto ryu, and I defeated him.
My opponent was called Arima Kihei, a sword adept of the Shinto ryu, and I defeated him.