However, EN no Ozunu was a semi-legendary person who is thought to be the founder of Shugendo (Japanese ascetic and shamanistic practice in mountainous sites), and the story that Kukai erected the hall is also thought to be a legendary story created in order to establish that Kukai, the sect founder, founded the building, so it should be said that what really happened with regard to the foundation of this temple is, in fact, unknown.
役小角は修験道の開祖とされる伝説的要素の多い人物であり、空海が堂を建立との話も創建を宗祖に仮託した伝承と思われ、創建の正確な経緯は不明というべきであろう。