I've Become the King of Villains in the Game - Chapter 5 - The Sacrifice Begins

Kazuki’s life was painfully average—just another cog in the nine-to-five grind. His only escape? Binge-reading novels and no-lifing video games.Then he woke up inside one of those novels.Armed with unstable morals, unhinged humor, and a penchant for pettiness, Kazuki is determined to survive, thrive, and maybe cause a little chaos along the way.The world has no idea what’s coming.

The hot catch Prince Eighth, also known as General Invincible on the battlefield, surely is favored by God, not only does he carry a big weight in court but he also has a gorgeous face. However, he is crippled forever after a fierce fight on the battlefield…

On his wedding night, Luo Qianqian cracks a cheeky smile at him, “Your Highness, looks like we are going to be sisters for life, nice meeting you.”

Hearing that, Eighth is like, “WTF, who is going to be your sister?”

He put his hands on the wall to corner Luo Qianqian, “My princess, you think I cannot satisfy you in bed, hmm, don’t be so sure about that.”

- Description from Novelupdates

15 years ago the world discovered magic as well as mythical beings (basically beings from various legends) in another dimension. Humankind learned to summon these dangerous mythical beings and use their power to great effect. Seven countries formed contracts with these “mythical beings” and gained their allegiance as a result. The mythical beings will choose their summoners on their 14th birthday and give them a stigma. Schools have been set up to train summoners and magical swordsman (basically bodyguards that give the summoners time to cast their spell) as a result.

15 years later after the finding of magic Kazuki Hayashizaki is chosen as a summoner and given a stigma to indicate that. This is surprising since males aren’t chosen as summoners due to their low amount of mana compared to females. As the first male to be a summoner Kazuki is under a lot of scrutiny by almost everyone.

To complicate matters his sister (who’s a magical swordsman) is against him going into summoner school to train there as a summoner. Because summoners and magical swordsman have a cat mouse thing going on where summoners look down on magical swordsman as inferior so his sister naturally is against him going there. She’ll stop him even if it means going to war.

Kazuki however is determined to thrive in summoner school and has already determined to give it his all. Even if he’s the lowest ranked student (ranked E) and his fellow students intend to demean him he’ll prove himself as the strongest summoner.

The whole world mutated. Mysterious resurrections happened in real life. The Tribulation descended.