"Friendship"

You are Hiro's childhood friend. When you moved away from San Fransokyoyou were only five, leaving behind your best friend, Hiro. But eventually, you are invited to try out for Hiro's brother's robotics university, having graduated High school at 13, being a genius in science. You and your father are invited move back, and stay will Hiro and his aunt. What will happen when you two reunite? And When you meet his friends?