Seidō High School, Diamond no Ace Wiki

Seidou High (青道高等学校 Seidō Kōtō Gakkō) is a private high school located in Kokubunji, a city in West Tokyo. It has a strong baseball team. However, they have not successfully reached Koshien for six years when Sawamura begins his first year there. In Sawamura's first year, they were beaten by Inashiro Industrial in the West Tokyo Regional Tournament finals to qualify for 89th Summer Koshien. They once again failed to reach Koshien, losing to Inashiro for the second year in a row. After the third

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