Being Able to Edit Skills in Another World, I Gained OP Waifus - Chapter 10: The optimist chief priest and the pessimistic visitor.

I exist in the darkness, disappear under the bright light, and will eventually devour the sun and turn into the shadow of all things… Known by people as the indescribable terror of darkness; the king of shadows; the dark day; the existence of the shadow of the world , is still just a somewhat special high school student, facing a weird death game…

- Description from novelbuddy

I Became Hades, the God of the Underworld from Greek and Roman Mythology

On his wedding day, they killed his soon-to-be wife and the vast majority of her family.He watched a drunken Interstellar Beast Master and his Beast rip apart those he knew as if they were paper.But the next day, everything was covered up.They were told that it was all an accident.No matter what he did, he was told again and again that it was just an accident. An accident with casualties that occurred while a heroic Beast Master was saving people in the line of duty and there were just a few casualties.But he was there, he saw the glee of the drunken Beast Master as he and its creature rampaged!But in Vael’nir, a world where interstellar Beast Masters were considered Guardians who protected the masses from Entropic Beasts and Vagrant Beast Masters, getting any justice or revenge for his wife and her family was going to be an impossibility.What could he, a weak human do against the terrifying Interstellar Beast Masters- some who were so powerful that they participated in wars in space and could travel to neighboring Colony Planets with their bodies alone?He only had his rage and anger as he memorized the face of the Interstellar Beast Master that destroyed everything he held.He was powerless to do anything until one day…a light fell from the skies and hit him, and he found a small six-tailed fox curled around his body when he woke up.A Beast.A Beast unlike any others he had ever heard of before.And just maybe…a possibility for revenge!—#Dark Fantasy, #Sci-fi, #Ruthless, #Beast Taming, #Cybernetic Humans…and more

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.

- Description from Novelupdates