You have been doing karate for 12 years since your dad is a professional. You’re 15 and your mom and dad are really proud of you. Your dad teaches younger kids and you help him with the younger kids, the maximum age of 10 but one day you get to the dojo and see a boy who seems your age training. He’s really good but you’re better. Your dad is happy to introduce you to him because he’s an exchange student from Japan and he’s staying for the whole year but you’re not really happy about that.