MTL - Orochimaru’s Magic Lamp - Chapter 354 tells

Before dying, the blind beauty Xiangnu accidentally entered an infinite escape world.

He fell, but he did not die.At least, not in the way he expected.The world he hated spat him out into another, a place where the sky bleeds, where gods are fractured, and where names weigh heavier than lives.Here, he is someone else.Someone cursed.Someone forgotten.Yet in the ruins of memory and the echo of laughter that was never his, a strange truth coils:that death is not an ending,but a beginning far crueler.A book without pages.A family without love.A body that doesn’t belong to him,and a voice in the dark that whispers of eternity.

“Why is the thing you summon always so strange, can’t it be a little more normal?”

Lu Yu looked helplessly at the guy who was waving his tentacles in front of him.

“Who made me look up to see you every day…”

- Description from novelbuddy

The apocalypse descends, zombies and monsters appear, followed by System Leveling, which grants skills to all survivors.With the collapse of law and order, some become powerful while others remain weak, and so the dark ages begin.