Son in Law's Debauchery - Chapter 108

I, Zatiel, Abyssal Lord, Ruler of Death and Destruction, Nightmare of Dys, have AWOKEN!!!!!.

His life contains events that can shake the universe:
-Fighting against Tiamat, Creator of Evil Dragonkind, in the first circle of hell, while billions of demons and devils butcher each other beneath them
-Start a World War against the Heavenly Race, and transform himself into a Golden Sun while he slaughters their greatest warriors, the Archangel.
-Enter the Final Gate and fight against the Outer Gods.
-Tearing the nine levels of Baator during his battles against the Prince of Evil, Asmodeus.

With his memories as a ruler of the Abyss and a Universal Existence, Zatiel will rise again.

The red meteor shower rained across the sky, a black fog engulfed the world.

After waking from a night of torture and agony,

Humans discovered they no longer dominated the world.

—The hunters have become the hunted.

After the apocalypse, I struggled for survival for ten bitter years, but ultimately couldn’t escape death.

But when I opened my eyes again, I had transformed from an ordinary 35-year old woman into a beautiful young man of 18.

A different gender, a world that is both familiar yet not, an apocalypse that has vanished without a trace, and an unexpected return of 17 years of youth.

Looking around, I discovered I had a powerful, protective big brother and a gentle, charming little sister.

Just as things couldn’t possibly look any brighter—

The end of the world came crashing down again.

And this time around, is it fight? Or flight?

[Have you become more learned today?][Accounting for the capacity of your brain, your study efficiency has been increased to 28 times that of normal.][The remaining amount of energy you have for studying today, 26 hours.][You will enter an exhausted state when your energy is depleted and be unable to obtain new information.][Please relax by using the functions within the system and restore your energy as soon as possible.]With limited energy and the onset of fatigue, the Study Monster had no time to think too much--papers to come!Had the heavens not grant me this system, the unending sea of knowledge would seem like a long night.