Kizuna Todoroki - thirteen-year high school student. Kizuna was brought up in the home of martial arts, and one day decided to challenge the world champion in wrestling,who won a victory in 10 years. Easily beating Wadati Dzyukenryu, she received a prize. However, due to a technical error admitted, her victory was annulled, and a cash prize of 100 million. Kizunoy yen was defeated by the enemy. Soon all over the world began to gather people willing to fight Kizunoy.And once peaceful courtyard Todoroki house turned into an arena of battle. Will Kizuna continue to win victories?