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Jirou Sakuma is a member of the original Teikoku Academy team and a close friend of Kidou. After Kidou leaves Teikoku and joins Raimon's team, he and Genda are hospitalized during a match with Zeus Junior High and are visited by the mysterious Akio Fudou, who convinces them to join a new soccer team. Bitter against Kidou for leaving his original team, Sakura accepts Fudou's offer and becomes part of the "Shin Teikoku" soccer team.

Source from Wikipeida