Air Gear

Itsuki Minami, known as Ikki by his friends, got in a fight with a Storm Rider group called the Skull Saders, and lost. At that point he gets more and more involved with the world of Air Gear and discovers a secret that the Noyamano sisters kept from him. He then decides to try out a pair of Air Trecks from his sister and ends up at an Air Treck meeting challenging the Skull Saders team by accident. This is due to the attractiveness of Simca on Ikki.