He studied Shitō-ryū karate as a student of Shinpan Gusukuma.
[2] He was the first teacher of Shūgorō Nakazato (from 1935 to 1940), who then went on to become a student of Chosin Chibana.
[3] The version of Gojūshiho kata practiced in Shōrin-ryū Shorinkan is credited to Iju and his lineage.
The rest of Shōrin-ryū Shorinkan katas are derived from Chosin Chibana's lineage.
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