Demon Hunter (Teramachi Akeho) - Chapter 4

[Shelter System successfully bound to host!][Option One: City of Light, save the survivors in the apocalypse and become a glorious and benevolent savior.][Option Two: City of Darkness, humans who enter the City of Darkness can only become your slaves. And you, will be the devil ruling over the apocalypse.]Sorry, I am no saint, I choose City of Darkness! From today onwards, I will be a villain!

One of the seven strongest people on the continent, the King of Mercenaries. He started a war to avenge his fallen family and destroyed territory but failed and lost his life. However… “Wow, I’m alive?” I returned to the past, back through time. A perfect opportunity to right my regrets and reverse everything. It doesn’t matter if people around me point fingers, calling me a scoundrel, or dismiss me as tr*sh. Because… “I’ve got a plan.” “What plan?” “A plan to destroy everything.” There won’t be a second failure. This time, I’ll wipe out all my enemies. …But first, I need to rebuild this damn estate.

Living things really are ignorant – the greed to obtain the key to knowledge and the fundamentals of energy overpowers them. Little do they know that knowledge is full of lies and energy is the root of destruction. Us, mages, have mastered travelling through space and time. We are invincible, we can turn worlds into dust and you, mere ants, will be wiped out with no trace.

-Mage Adam

An A.I.(Artificial Intelligence) gets reincarnated into a world where he becomes a mage.

The Human Civilization is on the brink of being wiped out. Only the last kingdom remains. Demonic beasts are the cause of this nightmarish situation. They would've annihilated the human race if the Beast Tamers haven't appeared. With their Beast Taming Seals, they can capture and command the Demonic Beasts, turning enemies into allies. They are the guardians of humanity who have forced open a safe haven for humans in a world overrun by demonic beasts.Ray, a law-abiding citizen with three part time jobs, transmigrated into this world after he was killed, finding himself a participant in the Beast Tamer Trial.If he fail, he would have to resume the original owner life and suffer endlessly until his death. If he succeeds, he would become a beast tamer, a privileged member of society.Luckily, the perk of a transmigrator arrived.[You have been bestowed the Strongest Beast Taming System!][You have tamed your first beast, the King of Slimes!][The Skill and EXP Sharing features has been unlocked!][You can use all the skills of your tamed beasts.][Everytime your tamed beasts kill a creature, you will gain EXP to level up.]While others were struggling to find ways to evolve their tamed beasts, Ray levelled up like crazy.