Eyeshield 21 follows Sena Kobayakawa, a timid high school freshman who is forced to join the brutal Deimon Devil Bats football team as their secretary. However, he possesses incredible speed, which the team's manipulative captain, Hiruma, exploits by forcing him to play as the team's secret star running back, hiding his identity behind a helmet and the alias "Eyeshield 21." The story chronicles Sena's growth from a bullied pushover into a confident and powerful athlete, as the Devil Bats rise from a ragtag group of misfits to compete against elite teams in the national tournament. Readers enjoy the series for its high-octane, exaggerated football action, unique characters, and heartfelt underdog story that balances intense sports drama with over-the-top comedy.