Langa Hasegawa , known in "S" as Snow (Sunō), is a half-Japanese exchange student in SK8 the Infinity who has just returned from Canada to Okinawa, where Langa Hasegawa mother grew up. Langa Hasegawa 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 Hasegawa has no skateboarding experience, but his knowledge in snowboarding helped him get a head start.
Langa Hasegawa has medium length sky-blue hair (described as "snow-like") that grows past Langa Hasegawa ears and blue eyes. Langa Hasegawa is above the average height, and noticeably taller than Reki. Usually, Langa Hasegawa 's shown in a high school uniform consisting of black pants, a yellow vest-jacket, and a white button-down shirt. When hanging out with Reki Langa Hasegawa wears baggy clothes consisting of dark pants, a blue coat, and a gray-colored shirt, and has also been shown in a white dress shirt and skinny jeans and a fully black school uniform, always accompanied by purple sneakers.
Langa Hasegawa generally wears a neutral or sometimes even stoic expression and when speaking, Langa Hasegawa tends to use as few words as necessary. As early as Langa Hasegawa introduction to his classmates, his teacher needs to urge Langa Hasegawa to tell the class more about himself other than just his name, to which Langa Hasegawa adds that Langa Hasegawa 's from Canada, much to the class' amusement.

Langa Hasegawa is calm and laid back about most things, but when it comes to snowboarding and or learning to skateboard, Langa Hasegawa 's greatly determined and frequently puts Langa Hasegawa life at risk. Ignoring self-preservation for the act of fun with Reki. Langa Hasegawa can be an air-headed and easily distracted. Langa Hasegawa is very self-assured when Langa Hasegawa is in his element and is a very quick learner. This can be seen when Langa Hasegawa easily masters riding a skateboard, using his skills from the fifteen years he spent snowboarding. Langa Hasegawa 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.
Because Langa Hasegawa grew up in Canada, Langa Hasegawa is unfamiliar with many Japanese customs and its culture. For example, Langa Hasegawa was not used to sitting seiza style during Langa Hasegawa job interview with Cherry Blossom and so Langa Hasegawa legs fell asleep. Another example is when Langa Hasegawa and Reki asked Oka if Langa can work there part-time, Langa Hasegawa lifts his head from the bow too early in a way that would ordinarily be considered impolite.

Langa Hasegawa 's also been endeavoring at getting a job to help out with bills ever since his father's passing. Langa Hasegawa is also very naturally stubborn and hard working. With the death of his father, Langa Hasegawa has taken the responsibility upon himself to find part-time work in order to help pay bills. Although the pay appears to be most important to him rather than what the job entails, Langa Hasegawa is open about his short-comings, such as when he declined help from Reki in writing Langa Hasegawa resume in case the job required reading and writing.