MTL - Happiness Consist in Contentment - v14 Chapter 21

She, a renowned assassin of the 21st century, actually crossed over to become Su Manor’s most useless good-for-nothing Fourth Miss.

With the sudden announcement of the launch of the holographic virtual network, Chen Mo, a hacker, received a special commission to hack this system in a bid to halt advancement.

To complete his task, he enters GENESIS – the holographic virtual game touted as the most secure – to look for a way to hack it. In his search, he inevitably becomes a terrifying force to behold.

- 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.

She was the Spirit Master of the Tea Hill. He was the Head of the Kunlun. They met each other by chance in Jiangnan. With many twists and turns, they got married. Unexpectedly, there were plots in store for them. After the resurrection, he forgot her… But she had his child… To meet him again, she endured the torture of the naga poison; for the people of the Tea Hill, she chose to be a devil… But fate still pushed her to a path without a turning back… She killed demons and devils but was used by others… Finally, she had to stand opposite to him… For the happiness and benefits of the three realms, she was incarnated as the Creation Goddess… She was the Spirit Master of the Tea Hill, Jiang Wuyou…