10 nen goshi no HikiNiito o Yamete Gaishutsushitara Jitaku goto Isekai ni Ten'ishiteta - Volume 12, Chapter 12.5

I accidentally changed the whole world, the resurrection of the dead, genetic variation, recovery of the qi, mountain and seas reborn, land and seas expanded and evil spirits have started to appear.

Ghosts are now commonplace. Some people now have three heads and six arms. Some people have obtained martial arts techniques and ordinary people are now just cannon fodder.

Fortunately, I have acquired an ability which can make various items mutate.

books into martial arts or cultivation manuals,

fruits into precious treasures of heaven and earth or poison that you can only imagine and…

weapons, that can split the earth or gain sentience!

- Description from Novelupdates

Synopsis is in the beginning first chapter, so you can try to read it first.Zhang Fei is an ordinary human, but he is also an Incubus, and he also a Heavenly Fox.

She died in her prime as the Queen of Song.

After being reincarnated, she becomes a simple trainee.

Losing her former glory? It doesn’t matter—no one can compete with her voice as a beautiful singer.

Mocked by her lowly birth? It doesn’t matter—her true identity is enough to make the whole world tremble.

She owes huge debts? It doesn’t matter…

A powerful boss once whispered to her, “Your debt will disappear if you become my woman.”

But the proud her would reply, “I’m sorry. I would sell my art, but not myself.”

- Description from Novelupdates

Yu Li and her boyfriend had known each other for four years and had been together for three. They were deeply in love.Her boyfriend was gentle and considerate. Apart from being a little too clingy, lacking a sense of security, and always dragging her to watch horror movies, he had no other flaws. They were about to get married when a car accident took both their lives.After death, she transmigrated into a book.The good news? Her boyfriend transmigrated too.The bad news? He lost his memory.The even worse news? Some entity calling itself a “system” told her that her boyfriend was originally the villain of this world.And not just any villain—he was a twisted, obsessive, and deeply dark antagonist, completely fixated on the female lead.This world operated on eerie, supernatural rules. The protagonists would be pulled into horror movie scenarios at night to complete survival missions. If their performance scores were too low, their lives would be at risk.And her little boyfriend was already teetering on the edge of danger.Yu Li fell silent.Amnesia, transmigration, and an infinite flow survival game.Now that’s what you call stacking buffs.—The first time she entered a horror scenario, she became the neighbor of the protagonist group. When the male and female leads came over for a visit, her gaze landed on the second-floor window of the house across the street, and she silently curled her lips into a smile.That night, a mu*derous ghost who had claimed countless lives turned into a wisp of smoke and slipped into her home, lying gently beside her. Lowering its head, it inhaled her scent like an addict, utterly intoxicated.“You smell so good… I want to eat you up… So good…”