The Brawler(1960)

Taro Uno, nicknamed "Fighting Taro," has joined Hyakusho Trading Company, which is currently busy with bidding for Southeast Asian reparations supplies. This is because their competitor, Toyo Bussan, is considered a strong contender. One day, Taro comes to the rescue of Toyo Bussan's president, Iwashita, and his illegitimate son, Kenji, who are being harassed by a local gangster named Kankichi.