Crazy Run

Overview

"Running reveals a person's life." In his second year of junior high, Shun Uzuki clocked the nation's fastest time and was hailed as a prodigious runner. Expected to dominate the athletics world, he suddenly vanished from the spotlight. Now, upon entering high school, he returns to competition! Yet, his appearance bears no resemblance to his former self— a flashy, blond playboy, a far cry from an athlete...! The world around him is speechless, but what of his true ability—!? A story of youth club activities aiming for national high school ekiden supremacy through setbacks and rebirth, and a strategy that rejects the "grit theory"! (Source: Shogakukan, translated)

Source: AniList