What modern Japanese martial art was developed by Morihei Ueshiba, often referred to as"the founder" "Kaiso" or "Ōsensei"?
Morihei Ueshiba Morihei Ueshiba (植芝 盛平 , Ueshiba Morihei , December 14, 1883 – April 26, 1969) was a martial artist and founder of the Japanese martial art of Aikido. He is often referred to as "the founder" "Kaiso" (開祖 ) or "Ōsensei" (大先生/翁先生 ) , "Great Teacher".
Kage-ryū (Aizu) Kage-ryū (陰流 ) is a traditional school ("koryū") of swordsmanship ("kenjutsu") founded by Aizu Hyūga-no-Kami Iko (c.1452–1538) in c.1490. This school is also sometimes called Aizu Kage-ryū after the name of its founder. The founder was also known as Aizu Ikōsai Hisatada, and his surname is sometimes written as "Aisu" instead of "Aizu."