I Became a Dark Fantasy Villain - Chapter 420

Duwei is born in this new world from Earth without making any sound, he does not cry, he just stares at the people around him. As he grows he does not speak and curses this new world in which he is forced to live.

His father a great general of insurance he must have aptitude for something, nevertheless he is not more than trash. Ignored by his family as the “ret*rded” heir.

This is the story of your journey to discover the truths of this world and use the knowledge of your past life to remove your title of ret*rd, even if you have to become a devil.

- Description from Novelupdates

What happens when a man gets transported into a foreign world filled with magic?

From the depths of a deep and blissful slumber, Chu Yu awoke to the vague sense of someone beside her. Among four of five men that she saw sleeping around her when she awoke, one in particular, caught her eye.'Who is he?'With his unrivaled elegance and the air of supremacy around him, he gazed upon the princess and asked, “What's wrong, Princess? Did you have a nightmare?”And with that, an uncontrollable chill rose up her spine that made her shiver despite the warmth of the room.Is it a joke? Or is it destiny?

In a certain world, there was someone who excelled in magic combat, people called him 『Sage』. Seeking the strongest combat art, he devoted himself to research every magic and combat arts in existence. And the conclusion he arrived at was very cruel, 『My body is not fit for magic combat』. Yet he didn’t give up. He sealed his own soul with a magic art, and was reborn in a far-off future. And the magic theory in the completely changed world he saw there was of unbelievably low level.