The founders of many schools were these people, and a lot of great founders, including Ittosai ITO, Bokuden TSUKAHARA, Nobutsuna (Hidetsuna) KAMIIZUMI, Muneyoshi YAGYU, Seigen TODA and Chui TOGO, appeared during the time from the late Sengoku period to the Azuchi-Momoyama period.
多くの流派の開祖はこのような人々であり、伊東一刀斎・塚原卜伝・上泉信綱（秀綱）・柳生宗厳・富田勢源・東郷重位といった大物の開祖が戦国時代後期から安土桃山時代にかけて輩出されている。