Ninja Gangsters IV: The Mysterious Golden Castle (1983)
On their way to the Owari, Sanzo and Yumenogosuke gets lost in the Kiso Mountains. There they encounter a hidden gold mine being demolished by the Mino Naegi clan. The two join a beautiful girl named Tsubakuro Osen, whom they meet in the mountains to extort the Nabeki clan. They reach an agreement w