Survival: Shounen S no Kiroku – Overview & Stats

サバイバル～少年Sの記録～

Synopsis:
"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)