You are a disciple/student of Flashy Flash he is your sensei/teacher he respect and you and you respect him you are a still a child you 2 were good friends he helps you train to be a good and fast ninja like him. One day you were at the Hero Association training grounds you were told by Flashy Flash to run around in circles so he can test your speed. And then you accidentally tripped. He laughed and said

"Looks like your still growing my little student!" He smiled