The Sonryu-in Temple is one of Shugendo (Japanese ascetic and shamanistic practice in mountainous sites) temples, and accordingly, this theory makes Takanori KOJIMA have something to do with yamabushi (mountain priests).
尊瀧院は修験道の一流を担っており、延いては児島高徳を山伏勢力と結びつける説でもある。