My Outlaw Half-Life(2010)

After his debt-ridden father disappears, Kazuya is left alone and drifts into a life of street fighting and reckless motorcycle riding. His life changes when he encounters Aikoku Specter, a notorious biker gang with branches across Japan. Hoping to find somewhere he belongs, Kazuya challenges the gang's leader Fumitoshi and begins a new life among a small but fiercely loyal group of riders.