サバイバル～少年Sの記録～•

Survival: Shounen S no Kiroku

"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! (Source: Manga Box)