Air Gear 4. Oh! Great

Without a doubt, Ikki is the most fearsome skater around. Too bad he's lost the super high-tech skates that helped him succeed. Worse yet, Ikki's a far better skater than he is a student. He's failing in class and must clean up his act fast in order to compete in the next Parts War - a dangerous and thrilling face-off between rival skate gangs. As the team leader, Ikki knows his friends are counting on him. Everybody thinks that he's the toughest kid in school, but is Ikki about to prove them wrong?