The Seidou High School baseball team is comprised of one hundred passionate boys who are fully dedicated to the sport. The Ace stands out as the team's top player, inspiring many of his fellow players to strive for the same level of success. Each team member possesses their own distinct strengths, weaknesses, and emotional challenges as they work towards achieving greatness. Among the team, Ryousuke Kominato is a highly respected veteran. Despite his small stature, he is renowned for his exceptional fielding abilities and authoritative demeanor. He closely collaborates with Youichi Kuramochi in forming an impenetrable defense for the team. Haruichi, who greatly admires Ryousuke, is also a talented player in his own right and happens to be Youichi's younger sibling. Along with their teammate Eijun Sawamura, who shares a room with Youichi, they share tales about their journey to Seidou High.