Undefeatable – League of Legends - Chapter 504:

When necromancers perform a great ritual to summon an undead servant, they bring a powerful vampire into their world. And now, their fate is sealed as food, but for Klaus, this is just the beginning of his adventure. In a cruel world where people will do anything for power and immortality, he is already very strong and immortal, so what's left if not start a family and have fun stepping on arrogant people through the way?

Masterpieces such as 'The Divine Comedy', 'The Theory of Evolution', 'Encyclopaedia Britannica', 'The Theory of Relativity'...Born in the history of human civilization, possess mysterious and magical powers in another world!Original sin, biological evolution, mastery of all arts...By reading the secret tomes, one can gain a variety of powers!The only trouble for the people of the other world is that they find it difficult to understand the texts from Earth.At this time, there comes a librarian from Earth...

It was the year 2030, in the modern era of humanity. A virtual game was released to the mass public known as Isekai World Online, It blew up in sales and its marketing campaign was extremely successful. People went into the game and enjoyed its play style, even the graphics were realistic. People questioned who made the game, as the company that supposedly created it has never been heard of by anyone, and their location is anonymous, but despite that, people continued to play it. Millions across the world enjoyed it, and its fan base continued to grow.The main character, Lee Kennedy, was one of the first people to play in the game’s beta before it released. He and a handful of players would grind the game and level up the highest they could go. However, everything changed for everyone once they logged back into the game, to realize the true intentions behind this game.For so long, people questioned why it was called Isekai World Online, but now they were bestowed with the truth. Their souls were trapped in the game, abiding by the laws of this new world.____________________________________Warning: Novel has LGBT stuff inside of it, extremely dark scenes, NTR for side characters, and other horrible aspects. If you don’t want a dark story I wouldn’t recommend it.

Xia Zhijun got the title ‘study god’ after scoring first place in the whole city. He’s the model of a good student in a teacher’s eyes: good grades, good manners, and quiet. When he wasn’t smiling, his entire body emits a cold abstinence aura. The girls only have the guts to look from afar and not get close.
Later, it was rumored throughout the entire school that even the study god would fight and hit on girls. Whoever dared to provoke his girl, he would teach you how to be a person at every minute. The night of the graduation ceremony someone saw him blocking Gu Siyi in the corner. He didn’t stop kissing even when she cried. He bit her lips and said in a raspy voice, “I’m going crazy…”
During college finals, Gu Siyi almost bursted out crying, “I’m such a failure. I won’t be able to find a good job in the future…And if I can’t find a good job, I can’t provide for myself…”
Xia Zhijun played with her pink earlobe and remarked, “I’ll take care of you.”
After they graduated, Xia Zhijun created a research company and Gu Siyi became the boss’s wife.
The commercial rocket, “Star of Siyi” was successfully launched. So everyone knew that the new technology superstar, Xia Zhijun has a wife who he spoils a lot.

- Description from Novelupdates