Obviously Miyamoto Musashi, but as with many great people there is a high chance much of his history has been jewed (like for example the lie that he was somehow a "zen buddhist" and the re-writing of some of his works to try and include that emphasis on death that the jews love so much). Including his supposed "death" which I am 100% sure has never happened. What is left of his writings strongly points towards him ascending spiritually and attaining the Godhead, and writing his Book after he had met Satan following his ascension. It's very likely that he hadnt planned at all on putting his undefeated school down in writing before, but changed his mind after meeting with Satan.
There is a small story on Musashi that I believe is actually 95% accurate and has survived jewish corruption. It's only very narrowly available today. I will copy-paste it below for anyone who wants a glimpse into the kind of awesome person Musashi is.
"One day a young boy came to Musashi asking for advice. For the following day, he had a duel to the death arranged to avenge his father, who had been killed. He asked Musashi to teach him how to win this duel.
Musashi replied saying he would teach him a secret technique that will guarantee his victory. He told him to hold a knife in his left hand horizontally, with a longsword in his right hand. He should advance in his opponent’s direction quickly and, immediately when he meets the opponents attack with his knife, he should pierce the opponent’s chest with his longsword.
The boy practiced through the night and succeeded in learning the technique. Musashi told him that his victory is certain, and that, upon arriving at the dueling place, he should look out for any ants. If he sees any, it will be a sign of victory. Furthermore, he told him he would send protective energies his way, so he shouldn’t worry about a thing.
The following day, the boy saw a great number of ants around his feet, which greatly encouraged him. Confronting his adversary, he did as Musashi taught him, and successfully killed his enemy, despite said enemy being very powerful.
Musashi had, very subtly, taught him the technique of the autumn monkey’s body. He told him to practice with a knife instead of a short sword because, in order to parry with a knife, he would have to get very close to his opponent. If he can get this close with only his knife, he will have executed the technique of the autumn monkey’s body without realizing it. Getting this close in a duel to the death is only possible if he has no fear. The technique of concentrating on the knife parry helped distract him from the fact that he was entering the opponent’s attack zone, which is something very difficult and frightening.
Upon seeing the boy’s talent in practicing the technique, he reassures him of his guaranteed victory. Hearing Japan’s best, undefeated samurai say these words, helped in encouraging the boy even further. Next, Musashi speaks of the ants. This connection between ants and victory was not some premonitory power of Musashi’s. He could be certain that the boy would find ants, as – during summertime in Japan – you would find ants anywhere.
The important part was that the boy was able to perceive and see these small ants, despite being about to duel to the death. The boy, guided by Musashi’s suggestion, put his attention on the ants, and found them. This reassured him once again. In addition to that, lowering one’s glance to one’s own feet can help stabilize one’s physical equilibrium, especially in a stressful situation like this.
Musashi raised his confidence even further by telling him he would send protective energies to him at the time of the duel. This kind of skill in teaching perfectly reflects Musashi’s martial arts and strategy."