Stride is an extreme sport: teams of six run through the city, using buildings and obstacles as part of the route. Sakurai Nana became fascinated with it after watching footage of a match at Hounan Senior High Academy, and enrolled specifically to play. She is growing into her role as Relationer—the team's coordinating leader—while working toward the End of Summer Eastern Japan Tournament alongside her teammates. A story about running fast and living the youth you only get once.