The 4th station of the Ryuo battle between the master and Yaichi, which is held at the hot spring inn Hinatsuru. If he loses here, Yaichi loses the title of Ryuo. But his heart was calm and clear. Aito, Ginko, and Katsura watch the biggest battle in Shogi history in the waiting room. And Tengi watching the online broadcast from home. No one knows the whereabouts of the game. Supported by the eyes of Ai who believes in the victory of the master, Yaichi challenges the fateful battle! !!