Go master Matashichiro Ryuzoji, during the game, was killed in anger by the Lord of the Nabeshima clan, Hizen-no-kami. The mother of the murdered Matashichiro, Akishino, cursing the Nabeshima family, commits suicide. Akishino's spirit passes to Matashichiro's beloved cat, and the monster cat appears in front of Hizen-no-kami along with Matashichiro's ghost...