First Stygian Diviner:Apocalypse - Chapter 293 Ciel, I Am Sorry -MR4

Crossing over to an independent urban world where martial arts and immortal law coexisted, the only thing Lin Shen could rely on was his clone’s golden finger.

“Clone cultivation, the host becomes stronger.”

“Clone [Pure Flame Body]: Flame attribute techniques cultivation speed +300%, Blazing Flame Palm, Melting Hand, Pure Flame Sword Skill… Any flame attribute techniques at your service. You can become a master in a day!”

“Clone [Natural Daoist Body]: cultivation speed +500%. All martial arts techniques can be understood at first glance, and will be integrated, crushing all geniuses!”

“Clone [Non-self Sword God]: Sword art technique power +200%, sword art technique cultivation speed +200%. No matter how strong you are, I will cut you down with one strike!”

…

“You never know how many clones are trying to cultivate behind the person you are talking to in front of you!”

“What does it have to do with me if my clone did it?”

“Don’t try to outnumber me cuz you can’t!”

*UPDATE: Read the sequel to this novel here:

He doesn’t know why his mind has been transferred into that of a petty thief named Soran within the VRMMO . The new ‘Soran’ though possesses both the body’s previous occupant’s memories and his own. Using his experience as a Legendary Rogue who had reached the apex known as the Realm of Legends, he will now have to survive in this world which had once been a game to him.

Soran will have to grow stronger while avoiding the upcoming dangers and protect his younger sister, Vivian, from the chaotic times which will soon devastate the world. He shall eliminate everything and everyone that threatens them, but perhaps Vivian might not need his protection?

When the demons of the Abyss rise and the gods fall, a massacre will take place across the world.

Divinity has fallen, and evil is surging from beneath.

The Time of Troubles has begun.

- Description from Novelupdates

A broken man who ended his own life finds himself reincarnated into the game he used to play. However, instead of becoming the protagonist or a powerful antagonist, fate places him in the role of a minor villain—a mere stepping stone for the protagonist in the game's first arc.

Kuramoto Daisuke, a freshman in High School was suddenly exposed to someone vanishing in front of him. Turns out he was admitted to a Special Class full of Isekai Heroes that were regularly summoned to Otherworlds since the start of their Middle School. He was told that he was to become their Support to prevent each of the Heroes' fate of dying in the world they were summoned into. Though mediocre, he realized that his ability has a great potential but it needs a lot of hard work on his part.

Unconvinced of being just the Support Character, he vowed to excavate his mediocre ability, all the while supporting the Heroes using it.

And maybe more.