Infinito: Salinlahi - Chapter 53

Year 20XX, the world was thrown into chaos when the Tower of Yxthar appeared...A colossal structure reaching beyond the sky, its countless floors each a gateway to a different world. These realms, seemingly connected to distant universes, spilled their dangers into Earth, unleashing monsters, invaders, and unknown horrors that threatened humanity’s survival.But from this catastrophe emerged an era of superhumans.... individuals awakened with extraordinary abilities.They became known as Stream Hunters, a title with dual meaning:“Hunter” for their combat prowess and “Streamer” because they broadcast their battles not just to Earth but across the multiverse.Through their streams, Stream Hunters gained viewers from other worlds, earning gifts and, if fortunate, the backing of a powerful Main Sponsor.Adam, an average ranking Stream Hunter, was just a background figure in their adventures... until the unimaginable happened.He woke up fifteen years before the catastrophe that would doom the world!Resigned to enjoying what little time he had left, Adam prepared for an arduous journey...But fate had another twist: he unlocked the Multiversal Livestream System...Granting him the power to copy the skills of his viewers.

Perhaps it is the choice of fate. As a senior otaku, Qian Lingfeng got the “steel shell system”. However, when he swept the world with the system, became a local rich man, made all kinds of beautiful women, opened a harem, and realized the ultimate fantasy of thousands of otaku, he found that things seemed far from simple!
When the end comes, biochemical zombies suddenly come down, fierce beasts are in power, bloodthirsty zerg roam to kill the world, and human lives are comparable to dirt. Where will weak human beings go in this world? Is humanity going to be extinct? Or … can an otaku save the fate of the human race?

- Description from Novelupdates

Kazura was selected as the winner on a lottery that he bought on a whim and received ¥4,000,000,000 (4 billion yen).

Mimizuku, a small girl with chains on her wrists and ankles and the numbers “332” branded onto her forehead, wanders into the Forest of Night seeking to be eaten by a monster. However, when the ruler of the monsters, the mysterious and beautiful “King of Night,” refuses to eat her, she tries to formulate a way to convince him otherwise.