Divine Magus: Awakening - Chapter 29: Runes of Dominion

Quinn Winter is a young man from another world. One day, he is suddenly chosen to become the new Demon King. But the Demon Kingdom is in big trouble – it's losing a terrible war against the human kingdom called Gran'le.To help his people, Quinn comes up with a risky plan. He will sneak into Gran'le and learn their secrets. But things don’t go as planned. A powerful noble sponsors him, and he ends up joining Heavenward Academy, the top school for training future heroes.At the Academy, there's a big challenge called the Selection. The best students become Paladins – magic knights who fight demons. Quinn doesn’t want to become a Paladin. He is a demon king! But now, he’s stuck in the Selection… and if he wins, he’ll become the very thing he’s supposed to destroy.He started the day badly. Now, things are getting even worse.

Shan Bei inexplicably transmigrated onto a tsundere cat named “Queen”, and was forced to appreciate the daily life of its owner, Mu Qing, and found that Mu Qing was not only coquettish, but also had an extraordinary obsession with her! Σ( ° △ °|||)︴

Fragment one:
Shan Bei’s cat eyes, which were originally staring at the computer, slowly turned to Mu Qing, who was staring at the document. His bi-color eyes were blazing with anger. This guy was yelling at her, and a hidden sex scene was deleted, deleted, deleted, and deleted a hundred times. What on earth was he thinking? ? !
Mu Qing couldn’t help breaking out in a cold sweat being stared at by the “queen”, how come the “queen” has become more and more real recently, she seems to feel that it is staring at her, hell!

Fragment two:
Shan Bei was sitting on the sink, when she saw Mu Qing who took off his clothes and walked into the shower, the cat’s eyes almost fell out, why does this guy like herself? ! Her figure is so good, although she is not as good as Shan Bei. Shan Bei was inexplicably happy, raised his hand to pat his chest, and touched a ball of hair.
Fuck-_-||, I forgot that I am a cat, with a single black line.
When Mu Qing turned back to get the towel, he saw the “Queen” was touching her chest with her head down? ! hell!

Content tags: special liking happy friends city love soul transformation
Search keywords: Protagonist: Shan Bei, Mu Qing ┃ Supporting role: Others ┃ Others: Shuangjie, Funny, Secret

- Description from novelbuddy

Seeing the cause of justice, the student Ning Tianlin, who was strangled, accidentally gained a combat system in the local government and returned to Yang.

What the hell, your fighting power is only fifty, then you still pretend to be me! I’m sorry to tell you 10,000 points of combat power!

What are you doing, have you been boiled down, trained in martial arts, and practiced iron gear? The fighting power is five hundred? That has something to do with me, I won’t tell you, the clothes I wear, but combat equipment! Just a single underwear, can add a thousand fighting power to me!

Hey, why do you say my combat power has increased so fast? Can I tell you that if I step on an ant and destroy a cockroach, can I increase my combat effectiveness?

- Description from uukanshu

Yang Feng somehow transmigrated into a different world and received a legacy of an ‘ancient high tech’ family, which does not directly raise his power, but gives him the technology to build things which are way more advanced than the seemingly medieval world.