Tsuchido is a district in downtown Onomichi, Hiroshima Prefecture, Japan. Tsuchido was once a key manufacturing center for the Imperial Japanese Navy during World War II, but the decline of the shipbuilding industry caused the economy to shift towards fishing. Tsuchido's red-light district also declined as young people preferred cabaret clubs in bigger cities to Tsuchido's local entertainment. By the 2010s, the Yomei Alliance's Masuzoe-gumi and its Hirose-gumi subsidiary were active in the neighborhood.