SK8 the Infinity

Reki Kyan, a high school student with a strong passion for skateboarding, faces a setback when his arm is broken and his skateboard is destroyed after a loss in an underground skate race called "S." Held in an abandoned mine, "S" is an illicit event where skaters engage in high-risk competitions. Reki's chance encounter with Langa Hasegawa, a half-Canadian, half-Japanese classmate with no skateboarding experience, leads to a bet that forces Langa to participate in a race.