He, who was born from the large snake Yamata no Orochi (in its avatar as the myōjin of Mount Ibuki) and a human girl, was a page at Mount Hiei from an early age, and underwent training, but he drank sake which was forbidden by Buddhism, and in fact was a big drinker, and was therefore hated by everyone. One day, after a religious festival where he dressed in an oni costume, he was about to take off the costume, but he wasn't able to since it was stuck to his face, and reluctantly went into some mountain recesses where he started his life as an oni. He then met Ibaraki-dōji, and together aimed for Kyoto.