I Became the Villain's Trainer - Chapter 41

I exist in the darkness, disappear under the bright light, and will eventually devour the sun and turn into the shadow of all things… Known by people as the indescribable terror of darkness; the king of shadows; the dark day; the existence of the shadow of the world , is still just a somewhat special high school student, facing a weird death game…

- Description from novelbuddy

One day, I was given the mysterious power of Hwanmong.

Yang Ming is an underachiever in high school. He skips class to shoot pool, cheats on his exams and gets into fights. However, by a twist and turn of fate and luck, he obtains some high-tech contact lenses that give him superpowers and dramatically change his life.

As his journey unfolds, he battles against society’s big guns and attempts to bring justice into an unjust world. Along the way, he has many interesting and romantic encounters with the ladies who are charmed by his character.

How will he use his superpowers?

Will he be able to overcome evil and bring justice to the world?

- Description from Novelupdates