sentences:  Soon after entering senior high school Sena is coerced into playing American football by Yoichi Hiruma, who recognizes Sena's running ability and forces him to join the American football club, the Deimon Devil Bats.To conceal his identity Sena and to keep him from being recruited by other teams, Sena wears a green eyeshield and Hiruma picks the alias "Eyeshield 21" after a famous Japanese athlete in the United States.The Deimon Devil Bats enter the spring tournament; they lose to the Ojo White Knights, but Sena decides to stay on the team because he finds it fun.