Hoki-ryu developed from the Katayama-ryu in the first half of the 16th century and concentrates mainly on Iai - the sudden drawing of the sword as a reaction to an attack.
The Katori Shinto-ryu is among the oldest still practiced Japanese martial arts (15th century). Among other things, the use of the sword, the wooden staff and the naginata is taught.
Whilst the Asayama Ichiden-ryu - which originated in 1566 – teaches the handling of various weapons, we focus primarily on its teachings of Jujutsu – the unarmed combat.
The Katayama-ryu originated around 1600. The section on Iai-kenjutsu concentrates entirely on sword fighting. Techniques of Iaijutsu as well as partner exercises are taught.
The Kogusoku part of the Katayama-ryu teaches various melee sword fighting techniques, like those executed with shorter blades, giving a further insight into the use of these weapons.
Fuden-ryu is a style of spear fighting that has developed from the Takenouchi-ryu around 1600, on which also the Katayama-ryu is descended.