Mistress Of The Evil Forest - Case 192: God of Nihility.

One day, Su Qi suddenly discovers he has a peculiar ability: he can see Easter eggs hidden in the world around him.These aren’t just bits of extra information; by performing specific actions, he can unlock hidden rewards.While everyone else is fleeing in terror from a vengeful female ghost, Su Qi is already setting the table for a candlelit dinner, chatting amiably with her.[You acquire her husband's hat, a mysterious artifact that, when thrown, locks onto enemies and delivers a devastating mental shock.]When zombies overrun the streets, and survivors scramble for axes and kitchen knives, Su Qi confidently strides in, wielding a sound system in one hand and a heavy-duty machine gun in the other, casually clearing out the neighborhood.[No one can defeat me in my BGM.]This is the Abyss—the birthplace of despair and decay, where worlds crumble under fear and madness.This is also a paradise where countless seekers pursue the footsteps of gods.Myths of the past and epics of the future are written here in grand and tragic splendor.Until Su Qi shows up.With a mop soaked in the blood of a recently stunned god, Su Qi scrawls a few bold words onto the epic tale:“The Abyssal Garden: No Room for the Idle.”

Zhou Xu, an interstellar military counselor, was selected by the “will not die in peace” system, and as a result, even though he had a great fear of pain, began his journey as villain, forced to die a terrible death over and over again. Zhou Xu, after going through a hundred worlds and dying a hundred times, finally changed. He wanted to retaliate!

When Zhou Xu crossed for the 101th time, an error occurred in the system.

Zhou Xu, ready for revenge, seized the opportunity, and at last, placed the system under his control.

Haha, Zhou Xu laughed. The villain had always been killed by the protagonist. Now, he would like to see who killed who.

Cruel and merciless shou vs domineering bully gong

- Description from Novelupdates

The person that Pei Zhen hates most in his life is the perfect Fu Sichen. Alas, life is full of surprises and unpredictability. One fine day, an accident turns Pei Zhen into Fu Sichen’s pet cat! As Fu Sichen’s pet cat, he makes a shocking discovery about his sworn enemy – a deep dark secret that the perfect Fu Sichen has kept hidden for years. Trapped in his cat body, Pei Zhen moves from one adventure into another while trying hard to find a way of turning back into his human self. When he finally does, the world as he once knew, has become a completely different place!

Protagonist travels between different anime worlds to right wrongs and uncover his reason for being along the way.

- Description from Novelupdates