I can return to the age of mysterious - Chapter 134 - 115 Third Retrospection (4400)_1

Have you ever heard the story of the monster?

Have you ever thought that monsters have always existed, and they are lurking around you?

Have you ever thought that the reason why you are still safe is because the profession of “Monster Slayer” has existed for thousands of years?

Wang Qianchen turned into a monster when he woke up, and was ruthlessly hunted down by the monster slayers, and since then he has also entered a strange world!

- Description from novelbuddy

Luke is a half-beast who grew up in the twisty streets of a large city called Oukiwa. Abandoned by his parents as a child, he soon had to learn the arts of thievery to survive.

Even on the fringes of a super-powered society, he has followed a single rule all his life: never get involved with the Adventurers.

However, this rule is broken when his gang begins to hatch a plan to rob the most powerful family in town.

And so begins the chronicles of Luke Lange, a thief with no ancestors who in the future becomes one of the strongest men in history, with powers that are rivaling even the gods.

[You have been chosen as the new Lord.][You now hold dominion over your very own floating island.][Build your kingdom, summon legendary allies, and rule the worlds!][You have unlocked the SSS-rank Ultimate Gacha System.]Atlas Blackthorn was born with a miserable F-rank battle talent, certain he'd remain a background figure forever. But during a hunting trip, his teammate turned on him and hurled him into a deep ravine.That’s when the system chose him.Granted the Ultimate Gacha System, he gained the power to summon legendary warriors, rare artifacts, and, of course, waifus.With the system at his side and ambition burning within him, Atlas sets out to become the greatest Lord across all realms.How far will his dream take him?

When I opened my eyes, I was inside a novel.