The Mighty Dragons Are Dead - Chapter 18 - 00: One in 2.5 Billion Probability

Sa Bina was on her way to write her SAT when she suddenly finds herself in a strange world. She is sent to be the old emperor’s concubine, but on their wedding night, the emperor gets murdered by no one other than his own son and the heir! To survive, Bina makes a deal with beautiful but deadly Lucretius and her life in this dangerous kingdom begins.

Video game streamer Jing Yu, momentarily misstepped, and found himself in a strange professional gaming team.

Solo laner: Even if I have my eyes closed, asleep, dreaming, I can still kill you all!

Mid laner: Retreat? Not going to happen. Even if I only have one drop of blood left, I’m going to kill you all!

Marksman: Attack range advantage? I like to battle close-range! If you aren’t a coward then don’t run, let me kill you all!

Support: Support? As if! Wait until I switch to an AD build, then I’m going to kill you all!

Jing Yu: ……

Jing Yu: All of you, retreat! I’ll be the one to kill them!

- Description from Novelupdates

“Breaking News! A 28-year-old IT worker beats three university kids to death with a spiked bat over a dog!”Abandoned at birth, and named John Wicked, he suffered a life of solitude and harshness. His only companion was a dog named Alfred who was with him since he was 8 years old.Alas, on his 28th birthday when he was returning home from the company with a gift for Alfred, what awaited him was three university students beating his dog senseless--the reason being that Alfred barked at them.They escaped after beating him, too, but John Wicked lost his only family there as the sky broke into tears as if weeping alongside John, holding his dear companion's lifeless body.After getting revenge and being put on death row, John Wicked felt no regret for his actions, and the public also didn't support him.If the world didn't understand him, he didn't need to understand the world. He took his own life because he didn't want to die by the so-called justice of this world.But that wasn't the end. That was the beginning of John's new life after making a deal with an Eldritch God.Join John and Alfred's journey in the fantasy world where humans tame monsters and live an intricately connected life.

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.