MTL - Black Dragon Kingdom - Chapter 475 New Era Comes

In the foreign world, the martial artists dominate the world and the sword of the emperor controls the fate of hundreds of millions of lives! Long Yu, the number one killer on Earth, after dying, takes rebirth in this new world in an aristocratic family of martial artists but faces rejection because he is unable to practice martial arts.

- Description from Novelupdates

I just woke up and the beautiful disciple was feeding me medicine. I drank it without any precautions. As a result, when the beautiful disciple came out, I scrolled through my memory and found out...Oh my god, I traveled to another world and became the Supreme Pontiff of the Qian Xunji Spirit Hall?!In the beginning, I encountered a situation where Tang Hao seriously injured me and Bibi Dong was going to kill me in revenge.Fortunately, I activated the Villain Douluo System. As long as I make the righteous miserable, I can continue to become stronger.Tang San, Yu Xiaogang, Tang Hao... your nightmare is approaching.

[You have entered the dungeon at Gwachun Station’s 1st Exit.] When former high school student Kang Woojin finds himself returned back to Earth after being forcibly summoned to a foreign planet for 20 years, he soon finds that Earth is not the same, normal place as he once remembered it to be.