Langa Hasegawa  is a half-Japanese exchange student who has just returned from Canada to Okinawa, where his mother grew up. He gets caught up in "S", an underground skateboard race, along with Reki Kyan, and the two are quick to become close friends. Unlike Reki, Langa has no skateboarding experience, but his knowledge in snowboarding helped him get a head start. 

He is calm and laid back about most things, but when it comes to snowboarding and or learning to skateboard, he's greatly determined and frequently puts his life at risk. Ignoring self-preservation for the act of fun with Reki. He can be an air-headed and easily distracted. He is very self-assured when he is in his element and is a very quick learner. This can be seen when he easily masters riding a skateboard, using his skills from the fifteen years he spent snowboarding. He was able to make quick adjustments, such as quickly learning how to turn on a skateboard, which is different than turning on a snowboard due to the trucks and wheels on the skateboard.