@H i s o k a the manhwa didn't explain it but
Spoiler!
mc killed a giant snake inside the cave he was thrown at and that made him this strong
https://mangamirror.com/manga-list/106967
I'm a bítčh so if i try to start an argument pls don't reply,i just want to waste your time cuz I'm probably bored.anyways fùck this world 😍