Tetsuji Yamada, nicknamed "Tetsu," begins his first year at Warabi Seinan High School as a midfielder on the boys' soccer team. Originating from Fuji Daiichi Junior High School, his soccer journey includes long-term participation in a sports youth club alongside teammates Nozomi Onda, Kaoru Takei, and Yasuaki Tani. Years of shared play forged strong bonds among them, with this foundation of teamwork shaping his relationships throughout the series.