He is just an ordinary human being who accidentally traveled to a dangerous world and is still weak.
There are many scary and dangerous monsters in this world. On the first day he came to the world, he was almost eaten and almost had a leg broken. He kept running away, and finally accidentally entered the lair of a large and violent species. He was lucky enough to be treated as a cub of the same species, and he survived.
It has an appearance similar to humans, but like the monsters outside, it is killing in a world of survival of the fittest.
Intention: What's ahead?