My Slayer System: Rise to Supremacy - Chapter 312: Level up

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.

“You will be my wife one day.” Declared Liu Jun - the handsome and wealthy young master to his beloved childhood friend. He vowed to marry her at all costs. But that vow made him a villain. The woman he desired didn't return his love. Crazy and heartbroken, he crashed into her wedding, who was going to marry the love of her life, Liu Jin, unfortunately his own younger brother. Circumstances took a drastic turn, leaving him with only one choice to pay for his sins - His death. But fate gave him another chance. Liu Jun was reborn. In this new life, he chose to let go of his love and start anew. He discarded his villain's identity and closed his heart forever. But a new encounter and new troubles come knocking on his door with the secrets of his past life that even he doesn't know. Will the villainous Mr. Liu find his happy ending this time? *Excerpt* Ai said, “I forgot to clarify something. It seems you have a misunderstanding that I am interested in you because I stared at you.” Jun blinked once. “Rest assured that's not the case. I won't look at you that way. You are not my type.”

Traveling through the era of national beasts, Su Yi discovered that his pet beasts could actually choose a special evolutionary route!

When others are still trying to make the red fox evolve into a flaming fox, his nine-tailed fox fairy has already fallen in love with Liaozhai;

When others are still trying to make the thorn grass evolve into a thorn tree, his queen of thorns has already suffered from secondary school;

…

Looking at these strange beasts, Su Yi fell into contemplation.

Will I still be a beastmaster in the future?

This is the demon!

- Description from novelbuddy

To save a doomed fantasy world, I killed the main characters, then destroyed the game world, and fell into another timeline as the academy's top seat and rival to the protagonist.Now, I'm trying to save the world and steer it towards a better ending…But I'm the final boss.