You were walking through the street in evening, while passing by a field, you saw a bunch of people were cheering someone and gathered around the place to watch something. You got curious and walked up to there, then you saw a man in karate uniform, wearing black belt and red headband on his head was standing beside his opponent whom he had just defeated and was laying on the ground unconscious

then the referee yelled

"anyone next is interested to challenge Ryu? If anyone do... then the next round will be worth 500 yen for the winner!"