Harry Potter: Ero World - Chapter 20: A bumpy Ride!

He crossed over to a new world where humans have magical power. They are called warriors. They use their power to kill the monsters that appear out of nowhere. Dragons, Dungeons, and Magic users are pretty common in this world. If you want to live in peace, you need to have that power. You can also become a powerful clearing dungeon.

In this dangerous world, he has a system that can help him grow stronger. But he didn't want to be a high-profile warrior who attracts much powerhouse attention or become a lab rat. He wants to be Low-profile and grow strong using his system.

Years ago, Earth was indoctrinated into the “System.”Earth was not the only place with the System, however. With the System came the other races, Invaders. The Invaders had one goal, to obtain ownership of this new habitable planet. This created a bloodbath, and for years the war raged.This didn't really have much to do with Derek. Derek was kind of a loner. Yeah, he enjoyed the occasional chat or drink with others, but he never stayed in one place too long or really got to know anybody new.Derek did happen to be rather strong. After the years of fighting monster and Invaders alone, he had become quite adept at surviving. One thing that helped keep him alive was his refusal to get involved with others. He rarely cooperated with teams.One day, Derek broke his rules and decided to lend some help, as the mission didn't seem too hard. He should have stuck to being alone.

Billions of people around the world were transmigrated to the game world of “Shining Era.” Everyone became lords and possessed their own land.

They recruited troops, gathered resources, occupied mines, attacked cities and built up their empires.

In this world of lords, the most important resource was the troop lairs where they could recruit troops.

However, the potential of these lairs was fixed. If anyone wanted to obtain a top-level troop, they could only do so by defeating powerful wild troops and occupying their lairs.

However, Richard discovered that he could actually improve the level of troop lairs directly.

From then on, various powerful troops were groomed by him.

When the other players were still leaping with joy from obtaining a high-level troop, behind Richard were a Desert Pharoah, a Demonic Scorpion King, a Mechanical Giant, a Demon Baron, a Blood Archduke, a Five-colored Evil Dragon, and a Fallen Angel.

From that day on, a prosperous and dazzling oasis city was established in the desert. As for Richard, he became the ruler of the desert.

Traversing into another world, Zhang Xuan finds himself becoming an honorable teacher.

Along with his transcension, a mysterious library appears in his mind.

As long as it is something he has seen, regardless of whether it is a human or an object, a book on its weaknesses will be automatically compiled in the library.

Thus, he becomes formidable.

“Emperor Zhuoyang, why do you detest wearing your underwear so much? As an emperor, can’t you pay a little more attention to your image?”

“Fairy Linglong, you can always look for me if you find yourself unable to sleep at night. I am skilled in lullabies!”

“And you, Demon Lord Qiankun! Can you cut down on the garlic? Are you trying to kill me with that stench?”

This is an incredible story about teachers and students, grooming and guiding the greatest experts in the world!

- Description from Novelupdates