The Runesmith - Chapter 43 More smithing.

Stripped of his blood meridians, young lad Lu Ming suffered all kinds of humiliating demise and was deemed useless. One day, he gained access to the Supreme Shrine by chance and went on a glorious, odds-defying path with a reborn supreme blood meridian.

The myriad paths of the Dragon Emperor were birthed by cultivating the True War Dragon Technique, devouring countless living beings, connecting all blood meridians under the skies, and traveling through and defeating heroes from all Nine Skies and Ten Lands.

30 year old Lu Ziwen was born in poverty and after struggling for a lifetime, he is finally able to perform in the Golden Hall symbolizing the highest honor. However, an hour before taking the stage, he was killed by his lover.

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.