Blackstone Code - Chapter 110:

It isn’t the strongest who survives. The one who survives is the strongest.”After being discharged from the military, Jin Seowoon did nothing but play games like a loser. One day, he was invited to the world of “Cloyd Survival,” which resembled a game he enjoyed.In that world were masters of martial arts, kings from other worlds, and notorious killers…It was a gathering of monsters that surpassed human imagination.Jin Seowoon had just one objective—to survive and become one of the top ten.Here lies a tale of survival with Jin Seowoon’s life at stake.

Shi Jin once read a book. It was supposed to be about satisfying the desire for vengeance.

This is the story of Kir, who has to thwart the will of Heaven, Hell, and his parents in order to survive, protect the people he loves, and achieve happiness.He just has to make it through life at a magical academy, avoid dying, and survive to find his birth mother, the lost Daughter of Heaven. Or be forced to take his place at the side of his father, a Duke of Hell bent on destroying the way things are.It's a lot to handle for a quiet, brooding angel boy.Fortunately, he has company. A succubus, a foxkin girl, and a half-angel boy to start. And Kir has his own secret: this isn't his first go at life.

A biker tries to save a cat on the highway and gets hit by a truck (Truck-Kun), he was rushed to the hospital but, due to internal bleeding, he dies only to be reborn as a cat, in a new world with a system.

In this new and vast world, he tries his best to get used to his new body and get stronger along the way. With his overpowered system and skills. To one day become untouchable.