Worlds end

In a world where the strong must fight to survive and the weak perish
it's unbelievable to think that that world is this one
our modern world gets overturned and becomes the playgrounds for the gods
this a story of a simple college student who one night while studying had the scare of his life when his girlfriend turned into something he didn't understand.
She was an undead and tried to eat him alive without much time to think he chose to end her life
if you can call it that.
but what happened next is what scared him even more,
her body just vanished into thin air, the only thing left was a book where her body used to be.
on the book, he saw a text written in a strange language
without trying to read it the words popped into his head
soul search level 1 king class
so began the story of a world-changing into a den of monsters with loot and levels as a voice said
you who are left fight survive and conquer