The Japanese folktale of Kintaro, the strong boy of Mount Ashigara who grows up among animals, defeats an oni, and becomes a samurai.

At that time, the capital was in great turmoil. People said that an oni was appearing in the city and carrying people away. Because of this, everyone lived in fear.

Kintaro — page 5

When Kintaro heard the story, he declared, "I will defeat that oni." But the people of the capital laughed at him. "A child could never defeat an oni. On the contrary, he is more likely to be carried off himself."