When he became aware of his origin at 11 years of age (or 15 years according to another theory), he refused to be a Buddhist monk and tried to refine his martial art, training himself by crisscrossing the Kurama-yama Mountain.
そして11歳（15歳説も）の時、自分の出生を知ると、僧になる事を拒否して鞍馬山を駆け回り、武芸に励んだ。