Doomsday Lord - Chapter 1: Bizarre Rebirth

Chen Wu, an ordinary man from Green-mount Town, never expected his life to end in tragedy—or to begin anew in a treacherous world called the Ten Thousand World. Here, humans are prey to powerful Demonic Beasts, and survival hinges on cultivating Spiritual Energy and forming bonds with formidable creatures. For ten years, Chen Wu struggled to make a mark, his dreams of discovering a “”Golden Finger”” fading into despair.But fate takes a cruel turn when Hu Wang, a ruthless Demonic Pet Master, learns of Chen Wu’s rare Contract Spiritual Talisman—a legacy from his father. Ambushed and gravely injured, Chen Wu plunges into the deadly Gold-sand River, escaping only to find himself cornered, starving, and on the brink of death.When all hope seems lost, an electronic voice suddenly rings out:“”Ding! The Super God Evolution System has been activated!””With his Golden Finger finally in hand, can Chen Wu turn his misfortune into triumph and rise to claim his destiny as a Demonic Pet Master?Or will he succumb to the perils of this unforgiving world?

Lin Yuan took a ‘Gate to All Realms’ and traveled to the vast universe of the Star Sea.

The most powerful person here can destroy the starry river system with a snap of his finger, and tens of millions of light years are coming in a blink of an eye.

Lin Yuan, who has been reduced to the bottom, can only rely on the ‘Gate of All Realms’ and the bound talent ‘Heaven-defying Comprehension’ to travel through all realms and become stronger silently.

[You have incredible understanding, practice the Yi Jin Jing, and understand the ‘Yi Jin Jing, body exchanging blood and quenching the gods’]

[Your understanding is against the heavens, you understand the thunder in your palm, and understand the ‘Thunder Creation and Development Method’]

[Your understanding is contrary to heaven, watching the birth and death of the world, and realizing the ‘world in the palm of your hand’]

[Your understanding is contrary to the heavens, you have studied the art of incarnation outside the body, and realized the ‘Great Law of Self-Transformation’]

…

As he traveled back and forth again and again, Lin Yuan grew stronger endlessly, until… he was invincible in the world.

- Description from novelbuddy

In the eyes of outsiders, Yan Ruxu’s conditions are extremely good: good looks, high education, a high salary, and a high position, but there is a fatal flaw: she is divorced, with a three-year-old child. Yan Ruxu didn’t care what others thought of her, she just wanted to raise her son well and live her own life.

- Description from Novelupdates

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.