Ookiku Furikabutte, also known as 'Big Windup!', is a sports anime and manga series centered around high school baseball. It follows Ren Mihashi, a pitcher with low self-esteem, as he joins the Nishiura High School baseball team. Through teamwork, personal growth, and challenging matches, Mihashi and his teammates strive to compete in the national high school baseball championship. The series is well-regarded for its realistic depiction of baseball strategies and character development.