二天一流
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Meanings
1
Niten Ichi-ryū; classical two-sword style
A historical school of Japanese swordsmanship founded by Miyamoto Musashi, emphasizing the use of both a long and a short sword simultaneously.
Miyamoto Musashi is considered the founder of Niten Ichi-ryū.
In Niten Ichi-ryū, one learns techniques for using two swords simultaneously.