Break Through!

The Higashi High School Karate Club clashes with a gang of delinquents from a high school for resident Koreans, and their leader Ang-son. Kosuke from the Higashi High falls in love with Ang-son's sister Kyong-ja, a talented flautist. Kosuke starts studying Korean and playing the guitar to get close to Kyong-ja and learns the tune she plays called "Imujing River," a song about homesickness for Korea. Kosuke gradually wins her over and becomes friends with her brother and the other resident Koreans. But when one of his new friends dies in an accident Kosuke realizes the real depth of anti-Japanese feeling among Korean Residents in Japan.