She starts off small

Yuna ran as fast as she could after the man chasing the woman. She jumped passed the man, landed on the side of a street lantern, and jumped breasts first into the man's face. With the man now lying on the street, Yuna grabbed his arms and swinged his body like she was hammer throwing him. She threw him strait into a wall 30 yards away. She walked up to the man, saying "Never threaten anyone ever again."

The man yammered, "but I wasn't going to do anything! She lost her purse, and I wanted to return it." The man moaned in sheer agony. "I think you broke my arms, you psycho bimbo bunny!"

As a crowd formed around the broken man, Yuna just stared blankly and walk away into an alley.

"Okay, terrible start for my hero career, but I stop the next crime for sure."