Mash-up Anime World: Creating the SCP Foundation to Contain Anomalies - Chapter 305 - 299: Possessive Mask + Plague Doctor = Zombie Crisis?

As disaster was about to strike, a group of survivors transmigrated into a desolated world and were challenged to a game of survival. From terrifying acid rains, to endless natural disasters, the heavens burn while the earth scorches, radiation is rampant, and nobody is spared from the dangers of this hellscape. The only way one survives is by building a shelter and slowly upgrading it in hopes of surviving another day.

Lingyun, a fierce and savage cultivation genius takes over a dead teenager’s body. Coincidentally, they are both named Lingyun. Set in a alternate version of the 21st century, teenager Lingyun has been killed by someone with a grudge.

- Description from Novelupdates

“Kill them all - every last member of House Grim must die tonight!”That was the last thing Renard heard before his world turned to ash. One night was all it took for him to lose everything - his family slaughtered, his home burned to ashes, all because the other Great Houses branded them traitors.They thought they wiped a noble line. Instead, they created a monster.Rising from the despair of losing everything, Renard became the beast Sovereign. He embraced the darkness and rose to the position of the 7th commander of the dreaded demon army.Leading an army of Demons and monsters, he brought three legendary Heroes to their knees and crushed four Great Houses to dust. But just as revenge was within his grasp, the champion of Humanity - Klean Weaver's holy sword pierced his heart.Renard thought that was the end.But something impossible happened.He woke up in the past, in a time when his family still lived and House Grim stood strong among the Eight Great HousesA second chance!A chance to change everything.That wasn’t all.For unknown reasons, he inherited the Legacy of the Devourer, a power that lets him consume the strength of his enemies.Was it a curse? Or a blessing? He didn’t know. But for Renard, it is simply a tool to protect what's his.The Lords of the Great Houses think they're untouchable in their high castles. They have no idea what's coming.This time, the Beast of House Grim hunts first!!

[Sys--... ini--tializing...][Err0r: M3m0ry c0rru--ion d3tect3d. Pr0c33ding 4nyw4y.][Miss10n: Unkn0wn. Purp0s3: Und3f1n3d. Proc33d.]Laverne never believed in the supernatural. To him, life was already complicated enough without worrying about things like ghosts or reincarnation. But when a reckless act of bravery ends in fire and chaos, he wakes up to something far worse than death—an unfamiliar world governed by an unfathomable system.Marked as an Anomaly, an existence that shouldn't be, he finds himself entangled in forces beyond mortal comprehension. The world he is reborn into runs on the concept of Ka, the essence of life and fate itself. Yet, unlike others, his Ka does not conform—it rebels. The system that governs this world struggles to define him, its very framework warping around his presence.With each step forward, he realizes that his mere existence is enough to tip the scales of destiny. Some will seek to control him. Others will try to erase him. But one truth remains:'In a world where fate reigns supreme, what happens when something stands outside of its design?'