the parodical son of Miyagi-do karate

What if Sam had a twin brother who loved Karate and wanted to be a champion but he knows that if he wants to win he needs to be offensive and defensive so he watched videos of people doing karate on being offensive and learns how to do the moves it's was difficult at the start but Y/n was a prodigy like no other in karate he was able to keep up with his father in karate.
Y/n wants to show the world he is not his father he is a person who can make his own name in the world but he will be doing it his own way.
When Y/N was younger he ask Mr. Miyagi what is the point in only being defensive if people could counter your defense. But Mr. Miyagi said when the time comes you will need to choose your own path you don't always need to be on defense sometimes you will needs to be on offense Y/N-San but that time has not come yet make your own path I know I will always be proud of you.