World-Ending Demon Emperor - Chapter 6 - Suo Ningbing

Somehow, the protagonist Kim Jin possessed a rich pushover extra in a novel who was exploited by the villainess and then met their demise together.But there’s no way Kim Jin would let that happen! He immediately defeated the villainess and locked her away. After that, the only thing left was to steadily enjoy life in this world while investing and extracting profits using his knowledge.But why… the more he punished her, it seemed that the villainess he had captured began to cling to him too much?

As the mad researcher in a tattered white coat activated the self-destruction device, Qin Luo knew that this time, there was no escape.

He was well aware of the destructive power of the self-destruction device.
Even if he is genetically inborn with an independent space, it is impossible to use the power of his space to resolve against such a terrible explosion.

His only end would be a torn space and the crushed bones.

On an unrecognizable earth rampant with zombies and mutant creatures, this end is good.

Death is far better than living…

With a skull splitting headache he opened his eyes to find himself reborn in the year before the apocalypse happened.

Is this a joke!!!
Is this a chance for him to be prepared to combat the apocalypse?
Is God not satisfied with all the bitterness he had went through and would enjoy watching him suffer once more?

- Description from Novelupdates

Floods, torrential rains, extreme cold, heatwaves, hail, earthquakes, polar nights and polar days… Overnight, the world transformed immensely as numerous natural disasters swept across it.Gu Yan knew, who struggled alone in the post-apocalyptic world for ten years, finally met her end alongside her enemies.Upon opening her eyes again, Gu Yan knew with her space ability replanted herself back three months before the apocalypse.Her younger brother had not yet been washed away by a sudden flood, and her boyfriend had not been frozen to death by his cousin in extreme coldness.With her soon-to-be useless company, she tricked her cousin's family out of billions, and Gu Yan knew started her delightful stockpiling life.From pearl milk tea and instant noodles, hot pots and rice with big plate chicken,To things that fly and swim,Whether for eating, drinking, playing, or using,All that can be thought of and not, she arranged everything.Whether it could be of use or not, stockpiling was the key!

After dying in an oddly anticlimactic vending machine accident, Kazuki Ren is reincarnated in the demon realm—not as a hero, not as a villain, but as the only human male student enrolled at the mysterious Academy of Ruin, a school where all the professors are demon lords and all the students are powerful, beautiful she-demons.Ren is told he has one task: survive.But there’s a catch. The Academy’s darkest secret is about to awaken, and Ren holds a hidden power that could either destroy the demon world... or rule it.Now surrounded by seductive demons with hidden motives, eldritch tomes, forbidden dungeons, and twisted exams, Ren must master his ability—or be consumed.Magic, mystery, danger, and temptation await in this dark academia harem fantasy.