Naruto System in One Piece - Chapter 27

The day a mysterious darkness enshrouded the world. It was theorized that the earth’s magnetic field had been changed, the data that corresponded to it also changed. The previous academic knowledge had been overturned, and numerous things had to be re-explored.

The science that humanity was familiar with had been disrupted, including the genes of human beings. One of the largest disasters brought by the change was that 80% of humanity transformed into zombies. After years of struggling, a few lucky survivors would evolve and awaken a power inside themselves. Chu Han was never that lucky.

While holding on against the first wave, humans weren’t the only ones getting stronger. Soon, stage 1 zombies evolved into stage 2 then 3 and so on. 10 years after the mysterious meltdown, the world of man belonged to the zombies. Humanity was nearing the of the end of the eschatology.

One day, Chu Han consciousness came back ten years before the end of the world came. He was awakened by a loud noise in a dormitory in Minqiu University. With only 1 day to prepare before the meltdown begins, he slowly begins to realised that he had undergone a rebirth. A power was awaking inside of him now despite never appearing in the hellish future. It calls itself the meltdown system.

Despite losing the monstrous strength gained through years of harsh training, this system claims to trade kills for talents. This is a story of a collapsing world, a meltdown system, and Chu Han being on stage as he travels to save those he could not save before.

- Description from Novelupdates

Takamine Haruto transmigrated into a crossover anime world. His childhood friend is Eriri, his deskmate is Yukinoshita, the school beauty next door is Kaguya, and his new neighbor is Gabriel.He originally thought he could enjoy a peaceful life in this slice-of-life anime setting!But then—he stepped outside and found the Female Titan, Annie.Around the corner, he ran into the gluttonous Kamishiro Rize.A concrete statue that twists people's necks the moment they look away?A shy entity that hunts you to the ends of the earth if you make eye contact?An immortal lizard that adapts to any environment and continuously evolves?Takamine Haruto was overwhelmed.To maintain his peaceful daily life, he established the SCP Foundation to contain anomalies from across the multiverse!

What is it like to be a prison guard in another world? Thieves, pirates, assassins, con artists, terrorists… Werewolves, vampires, witches, necromancers, succubi…This is the Iron Rose Prison, where the most dangerous witches in the world are gathered.“I will make this the best model prison in the world!”said a prison guard who had been transported to another world.“Warden, someone has escaped again!”“Bring them back and put them in solitary confinement.”Today, is also a peaceful day on the Rose Prison.Warden: “I’m just trying to run my prison properly, how did I become a big shot in this world?”

In the celestial empire, during the ninth year of the Mandate of Heaven,Chaos reigns across the land, and the people suffer.The royal governance collapses, and western barbarians with their pantheon of gods invade.New warlords arise, claiming territories; the Taiping rebels wreak havoc, leading to widespread misery.Calamities like floods, droughts, earthquakes, sandstorms, tornadoes, acid rain, blood moons, and meteor falls occur in succession.Countless demons roam, strange beings thrive, spirits mingle with the inexplicable, and mysterious phenomena arise.In these dark and tumultuous times, Tao Qian opens his eyes to find himself about to be beheaded at the vegetable market...