Natural Disaster: I Started By Hoarding Tens Of Billions Of Supplies - Chapter 21: Space Upgrade

He Lang died by his own hands for the sake of his imperial younger brother’s ambition, whom he loved. He was offered to be reborn in exchange for giving up his past romantic feelings. Reborn without the burden of his romantic feelings, he brings with him a manual to new worlds. He wholeheartedly followed the instructions of the manual to complete the tasks, not knowing that the originally slag gong was blackening…
He pleaded to his affectionate Emperor brother to release him, he pleaded to the paranoid prisoner next door, but until the end he remained baffled.
In the end, he discovered that the full name of the manual was – “Slag Shou Cultivating Manual”
Σ (っ ° ° °;) っ!

- Description from Novelupdates

Forget about moving to the other side of the world and starting over.The Apocalypse is here!As the only survivor of the Tutorial Quest in his area, Elijah awakens the Class of “Depraved Hero”, an ominous-sounding Class with a Legendary Rank!Additionally, because of the insane difficulty as well as his Clear Rank, he gains the Skills that, according to the mysterious figure that is the Administrator, he needs most.[You have Developed the Skill “Absolute Authority[A]”.][You have Developed the Skill “Slave Mark[C]”.]

Intellectual Villages are old fashioned rural villages recreated with cutting edge technology. Those villages attract the Japanese monsters known as Youkai.

The high school boy Jinnai Shinobu lives in one of those villages and has a Zashiki Warashi living in his house. He tends to run across Youkai with unnerving frequency and this often leads to trouble for him.

A low-level civil servant. An F-class hunter. Yoon Seora thought that’s how she would live for the rest of her life.Until one day she was thrown into a dungeon alone.“System, you f*cking son of a b*tch!”The moment death was right around the corner, everything was turned upside down by her cry that burst out unconsciously.[Checking information about ‘Yoon Seora’, the awakened who uttered abusive language at the system administrator] [Do you wish to sign a contract with the system administrator?]​So I happily signed a contract with the little system administrator who had appeared out of nowhere…【The overall evaluation value is readjusted.】【The Awakened ‘Yoon Seora’ (S-class)】​Wait a minute, Administrator-nim.You didn’t mention I would jump from F to S-class.【Administrator: (´ ε ` ʃƪ)♡】【Administrator: ♡ (ʃƪ ˘ ³˘)】【Administrator: (ง・▽・)ว】In addition, this administrator who overuses emoticons is too unreliable.Whatever. By being an S-class I was going to quit being a dirty civil servant who always works overtime.“I’ve never seen you in the past. Who are you?”“Hi, I’m a contractor for the world administrator.”​“I have never seen you before. Who are you?”“Hello? I am the world administrator’s contractor.”Somehow, I ended up in the center of an incident where the world is filled left and right with returnees. Can I really quit?Resignation Difficulty SSS+. Stay alive, office worker!