Other Name: ã‚µãƒã‚¤ãƒãƒ«~å°‘å¹´Sã®è¨˜éŒ²~; Survival: S Boy's Records;
Plot Summary: Could you survive in the wilderness that has lost all civilization? A huge earthquake occurs while Satoru and his friends are exploring a cave. After somehow making it to the surface, Satoru is shocked by the scene that lays before his eyes. From that day on, the lonely battle for survival begins!