Naruto: Uzumaki Kushina Twin Brother

It has been 9 years since i was transmigrated into this world and tomorrow the envoy from Konoha will come to pick up Kushina as a next jinchuriki. People call me Uzumaki Koshiro and im twin older brother of Kushina. I was MMA CHAMPION and has participate with more than 120 fight (98 win and 22 loss). I should be retired at the age of 30 because of injury and it would be dangerous if i continue to fight but suddenly i come to this world.