Reincarnated in a Compressed World (転生したら圧縮世界だった件)

Your name is Satou Tomimatsu. After suddenly dying in an accident, you awaken to find yourself
in a tiny world that barely extends to the length of your view, with people and monsters alike all
squeezed in together.

You’re unsure of what’s going on, but you’re about to become an adventurer,
and fight to save the world…