You lived in rukongai, you were a child who survived there. if you don't prove it, then you will die. you've been killing and surviving since you were young. you dreamed of meeting Yachiru Kenpachi and defeating her to get her title. and here you were walking with your katana. and you see how the captain of the 11th squad, Yachiru Kenpachi, is going, she was looking for the perfect leitinate for herself. who will look like her and you met eyes. you look about 9 years old.