MTL - Take It Easy - Chapter 90 miss

After dying in an oddly anticlimactic vending machine accident, Kazuki Ren is reincarnated in the demon realm—not as a hero, not as a villain, but as the only human male student enrolled at the mysterious Academy of Ruin, a school where all the professors are demon lords and all the students are powerful, beautiful she-demons.Ren is told he has one task: survive.But there’s a catch. The Academy’s darkest secret is about to awaken, and Ren holds a hidden power that could either destroy the demon world... or rule it.Now surrounded by seductive demons with hidden motives, eldritch tomes, forbidden dungeons, and twisted exams, Ren must master his ability—or be consumed.Magic, mystery, danger, and temptation await in this dark academia harem fantasy.

A data loving young man from Earth has an accident which transports him to a dark land filled with terrifying creatures and magical powers. Fortunately for him, he has a Biological Assistance Chip to ease his path. However, things in this bizarre and strange world are not always as they seem, and, though it is a tremendous asset, the chip doesn’t always work as expected. With all of the crazy creatures and magical mayhem around him, one can only wonder what the future holds for this young man…

- 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.

Bai Feng transmigrated into the game and became a formidable giant of the demon race, Bai Qingling.In the game, Bai Qingling was a scheming and cold-hearted character who would do anything for immortality. He practiced the art of Voodoo, created human puppets, and committed all sorts of evil deeds.What's even more despicable was that he always treated his three adopted stunning female disciples as pawns, making them the common antagonistic bosses in the “pure love” and “fallen evil” paths of the game!Bai Feng's arrival happened to coincide with the game's finale. At this moment, Bai Qingling was severely injured, completely depleted of mana, and about to be betrayed by those around him!In order to protect himself, Bai Feng had no choice but to intensify his wickedness and interact with those around him with the most ruthless and evil demeanor.But little did he expect that...Eldest Disciple: What a great immortal Master is! I really want to cry!Second Disciple: People misunderstand him so much. Master is truly a great immortal of love!Third Disciple: If we can contribute to Master's quest for immortality by sacrificing everything, what are we waiting for?Righteous Fairy: Master, if you don't abandon me, I will be willing to abandon the light and embrace the darkness, serving you faithfully!