7 years ago, the nuclear war ruined the world, now it's all empty valleys and deserts. all the oceans evaporated from global warming, now, the drinkable water is rain water. There are desert storms often, which can be deadly. People use gear scraps as money now, since dollar bills aren't worth anything.

There are 3 main territories in Japan. The Bone Valley; east of Japan, Dune's pit; north of Japan, and Oil City; south of Japan. West of Japan is free territory, where everyone are foes. There are tiny little settlements around Japan that trade Oil and Water for gear and weapons. If the settlement has a green flag; it's a safe spot, but if it has a red flag; it's free fighting grounds.

Katsuki had just escaped The Bone Valley, being stripped of all of his weapons and only having pants, nothing else. He had picked up some scraps of gear, hoping to find a safe settlement to trade for water. Even though he had lost everything, he still had hope that he'd survive another day. The sun was beating down on him, and the fact he was in a desert was making it 10x worse. He felt like passing out at any minute, but he kept his feet moving, since he knew the line; everyone did. "Eyes that close, don't open again."