Gekitotsu no Hexennacht - Volume 4, Chapter 8: Wishes Gather

In a certain world, there was someone who excelled in magic combat, people called him 『Sage』. Seeking the strongest combat art, he devoted himself to research every magic and combat arts in existence. And the conclusion he arrived at was very cruel, 『My body is not fit for magic combat』. Yet he didn’t give up. He sealed his own soul with a magic art, and was reborn in a far-off future. And the magic theory in the completely changed world he saw there was of unbelievably low level.

[ Warning: Mature content (R-18)]In a world where the strong is king and weak don't have any right to even raise their heads.Eric, a boy of humble origin, was beaten to half-death state and thrown into the Demon abyss.Luckily, he survived and even got a life-changing opportunity in the form of [Godly Devil System]However...“What? I'm a half devil and the most suitable path for me is of a Dual Cultivator?!”Join Eric as he rises from the bottom, breaks the societal norms, and create a place himself for the world.

Zavier met Cosmic Consciousness after his death. He was satisfied with every system that Cosmic Consciousness exhibited, so he wanted all of them. Surprisingly, the Cosmic Consciousness obliged him.

Zavier was reborn in an isekai full of magic and alchemy. Now, he had many routes to upgrade. Interestingly, to coordinate these systems, Cosmic Consciousness gave him the gift of being able to duplicate himself. He could clone a finite number of himself to manipulate these systems.

Magus, Alchemist, Mesmer, Tamer, Hunter, Vampire, Werewolf, Dragonknight, Necromancer.....

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By the way, it wouldn't appear NTR or some bullshit harem of courtships. MC of course will have harem but not for cliches.

Synopsis: Tags: [Game-World Crossover] + [Sovereignty Farming] + [Luck Mastery] + [Undead Scourge] + [Inter-Species Conflict] + [Heroic Battles]This is a world where games have invaded reality.Every year, students turning 18 awaken to a job change.One person crossed over and became a Necromancer.Relying on a luck-based talent that made wishes come true and a legacy from Mother Earth, this person rapidly gained power.While others gambled on skill mutations, summoning variations, and the chance with endless resources,he simply needed to shake his talent and use the least resources to obtain everything.With an undead frenzy, he broke through the blockades of the other nations on Blue Star, making his empire great again.With the undead scourge, he wiped out the decayed porcine dynasties within realm territories and became the new Realm Master.In the name of the Dead Spirit Overlord, he waged war on the Battlefield of Ten Thousand Tribes and ascended to the throne of the Demon God.