The Gate Traveler - Chapter 24B3 - : Barbarians at the Door

Travelling across a different dimension, you have become a noble who has fallen from grace. With the help of a proficiency panel, you can start your liver experience using the ancestral breathing method used by knights. Let us embark on this bizarre and mysterious journey and follow this wizard’s steps one by one.

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

"When will people understand.... I'm only half insane?"

Arakawa Kouki is reincarnated to a Japan with a different history than the Japan he knows with the memories of his previous life still intact. Kouki was discouraged, “Aren’t reincarnation stories supposed to be at some fantasy world filled with swords, magic and elves?!”