I Have a Manor in the Post-apocalyptic Era - Chapter 6 - Acid Bug

The world that nurtured the civilization which reached the pinnacle of magic was on the verge of destruction.
The last survivor transmigrated to the past, when the magic civilization started growing, as countless mages were still fumbling their ways through the thorny paths of magic knowledge.
He, who came from the end of the magic era, aim to reach the pinnacle of magic.

“It was a book.It was a scripture.”Its cover was made of the skin of those who hold a grudge against humans.Its words were written with the blood of those who hold a grudge against heaven.Its weave was created from the sinews of those who hold a grudge against earth.The ancient demonic object, restraining darkness shaking heaven scripture (制暗震天經).Yeon Sang-hyeon, who signed a contract with the restraining darkness shaking heaven scripture at the last moment of his days, is now rewriting his own destiny.The peerless genius met the ancient demonic object!

Chu Chen, who used to be an ordinary university student from a common family, gets a peculiar system installed in his head one day.The system makes him capable of obtaining all kinds of valuable properties as long as he finishes the various check-in missions it sends out.What's more, a Good-Luck card in his possession brings him enormous luck, allowing him to solve whatever trouble that comes his way with almost no difficulties. Due to his abundant wealth and attractive appearance, Chu Chen receives great attention from the public and the admiration of dozens of pretty girls.But Chu Chen is, after all, a man with honesty and integrity, so with his money and luck, he helps his friends in need and punishes wrongdoers. With all kinds of different character perspectives and situations.This story vividly portrays the realistic and materialistic sides of people as well as the convenience and power of a rich man.-----This book is also known as “Why Am I So Handsome, Still So Rich, You Are So Ugly, Still So Poor”, “Being the Rich Man is Too Hard, I Don't Want to Be One Day”, and “Becoming the Rich Man from Sign in”

Aomori, who has a monster-fighting system, came to the world of One-Punch Man and gained the ability to enter various instances.

Therefore, “Founder of the Hero Association”, “NO. “And other titles fell on him one after another.

Comprehensive flow, the main world One Punch Man.

Completed dungeons so far: Pokémon – Demon Slayer – Sword – Pokémon – Digimon – Spell Return – Yokai Comprehensive World (Girls that Noragami Inuyasha can see, etc.) – Pokémon – One Piece-re0-Dragon Ball wait.

- Description from novelbuddy