Ikan was close to Soko YAMAGA and had Gyosei, his son, learn the Yamagaryu (Yamaga school) military science and serve as the one who belonged to the samurai (warrior) class.
伊看は山鹿素行と親交があり、子の行生に山鹿流兵学を修めさせて士分として仕えさせた。