Ono-ha Itto-ryu
School #9 of 10 in our series. Ono-ha Ittō-ryū is the oldest surviving branch of Ittō-ryū — official sword school of the Tokugawa shogunate, founded by a man who won a duel to the death to inherit it. Still teaching in Tokyo under its 18th headmaster, in an unbroken line, today.