Board Thread:Fanon Canon 2/@comment-7040990-20140923112619/@comment-7040990-20140924012533

Shifūha wrote: The 'traumatic events' are hinted back in his background. He awakened the Sharingan with the sensation of liberation - something he never knew, an emotion unknown to him. After all, the brat had been living in the darkness since his birth. That's what you basically can find in the application.

There. Your answer.