Yagyū Shinkage-ryū
Aizu had two primary students, his son Aizu Koshichiro, and Kamiizumi Hidetsugu. Kamiizumi Hidetsugu would go on to teach Kage-ryū to his son Kamiizumi Ise-no-Kami Nobutsuna, a famous swordsman and founder of (which would be renamed Yagyū Shinkage-ryū by Nobutsuna's equally famous student Yagyū Sekishūsai Muneyoshi.