What is "ittatsu-ryu"

is a traditional school ( koryū) of the Japanese martial art of hojōjutsu. Today, Ittatsu-ryū has been assimilated into the traditional school of Shintō Musō-ryū. This particular school of hojōjutsu was created in the late 17th century by Matsuzaki Kinueimon Shigekatsu, the third Shintō Musō-ryū headmaster. The modern Ittatsu-ryū system comprises 24 training-forms ( kata), grouped into 3 different series.