Copy for All

This is a strange other world Everyone here has a copy since birth Just like the portable world, you can plant, breed, build houses, produce, mine... But after the age of 15, monsters appear out of thin air every day Every year, more terrifying and advanced monsters appear. Every year, many people are unable to resist high-level monsters and unfortunately die. As they die and their copies are shattered, monsters appear in their world. Monsters are increasing at a terrifying rate every year. People are already beyond their capabilities, and 2/3 of the land has been occupied. And I didn't travel through time I just accidentally awakened to the copy world My copy is that strange world. Looks like a matryoshka doll But if I am gone, will monsters appear... But what I care more about is that I'm dying This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.