The Demon Among The Knights - Chapter 9 - "The Echoes of Power"

Demons in Academy of Light are described as vile, dark, cruel, evil, impure, and a whole lot of other things. At least, that’s how they’re portrayed in the game—a sacred land where demons and dark energies aren’t supposed to exist. That’s how it was supposed to be... So what the hell am I supposed to do now? Thanks to my rotten luck, my soul ended up possessing the lowest-ranking demon, the one who dies at the very beginning of the story... I’m screwed! I have no other options left... If I want to survive, I have to kill the protagonist.

The simulation is over, and the entry is obtained: a showdown!

Looking at this entry, Zhao Meng was stunned.

“How should this term be used?”

“Hey! Here’s a wounded fox!”

…

A few years later, a woman who looked like a fairy appeared in front of him, and said:

“My lord, I’m here to repay my favor!”

This book is also called “Starting from Transforming Monsters”

- Description from novelbuddy

[CRIME/OMEGAVERSE]Was it possible for the devil to get his own happy ending?A major accident seven years ago had stolen He Juan’s memory away from him, wiping it so clean that the only things he were left with were only his name, numerous scars all over his body and a nasty side effect as a result of the aftermath.Seven years passed by and when He Juan thought he could live like a normal person again, a fateful day led him to be the prime suspect of the murder case of his neighbor who had written his name as her dying message — whom, in his defense, he had not even talked to!It was then that he met Mu Yuze, the lone wolf of the Violent Crime Investigation Unit; the cold, intimidating man with beautiful and intense midnight blue eyes who seemed to hate him at first sight for some reason He Juan couldn’t comprehend.One after another, bizarre cases intruded on He Juan's normal life and turned it upside down, bringing light to a dusty past he thought he could never remember again. In the end, he had to learn that even if he had forgotten who he once was… there were still some sins he had to atone.***Gentle, klutzy and smiling Alpha whom nobody dares to offend for some mysterious reason x cold, possessive and cinnamon roll Omega (maybe a little yandere here and there)Additional tags: top/gong/seme protagonist, action, case-solving, organized crime, thriller, gore, slice of life, tragedy, detectives, disabled characters, murders, teamwork, investigation, yaoi, mature, past plays a big part, 1 vs 1, love interest falls in love first

Everyone told Wei Yingluo that her sister had taken her own life. But the mark left on the corpse told a different story. To unearth the truth, she entered the Forbidden City during Emperor Qianlong’s 6th year of reign.

After investigation, she found her sister’s death related to Prince Hongzhou, and became determined to avenge her. The kind Empress Fucha, worried that Yingluo would stray onto the wrong path, took her under her wing. With the help of the Empress, Wei Yingluo grew to be an honest and strong female official in the palace, letting go of her resentment and living her life seriously from then on.

Yet the Empress passed away unfortunately, causing Yingluo to misunderstand Emperor Qianlong. Hostile against each other, could they understand and support each other in the end?

- Description from Novelupdates