A lot of cats don't realize that Japanese Martial Arts has always been a thing long before Okinawan Karate came to Mainland Japan and long before Judo and Aikido were created. The perfect example of this is the Ancient Martial Arts of the Samurai known as Koryū (Ko-Ryū) (古武道).
Jittejutsu (Juttejutsu) (十手術) The Art Of The Japanese Weapon Jitte (Jutte) a Weapon that was used by Law Enforcement during the Edo Period. It has some similarities to the Okinawan Sai.
Kusarigamajutsu (鎖鎌術) The Art Of The Kusarigama A Sickle And Chain Weapon.