SK∞

Reki is a second-year high school student with an unshakable passion for skateboarding. His true obsession, however, lies in “S,” an illicit and perilous downhill racing event held deep within the confines of an abandoned mine. Far from a simple competition, “S” thrives on raw adrenaline and intense rivalries. Participants and spectators alike are captivated by the “beefs”—ferocious, head-to-head duels that frequently erupt during the treacherous descents, pushing every skater to their absolute limits. The trajectory of Reki’s life shifts when he crosses paths with Langa, a transfer student who has recently returned to Japan after spending years studying overseas. Eager to share his greatest thrill, Reki brings the newcomer to the hidden mine where the underground races unfold. Despite having absolutely no prior experience on a skateboard, Langa is quickly swept up in the electrifying atmosphere of the clandestine circuit. What begins as a casual introduction rapidly transforms into an unexpected initiation, pulling the inexperienced transfer student directly into the heart of the dangerous world of “S.”