MTL - Great Voyage: Invincible From the Era of Rocks - Chapter 436

When a person dies, they either die light as a feather (aka unimportant) or heavy as Mt. Tai (aka very important).

The little handsome son-in-law passed through a world as waste material and the husband of a wealthy family. But because of his lacking aptitude, the wealthy family had driven him out. So he worked hard and found a more powerful family’s thighs to hold onto. Soon enough, he became the strongest son-in-law and husband in history.

In this world, it was impossible to practice martial arts. It was futile so he might as well take advantage of his wife’s thighs and maintain a comfortable and leisure lifestyle.

He’ll train his wife to become the strongest and best person in the world.

“Whoever dares to provoke me, let my wife kill you!”

- Description from Novelupdates

Having lived a normal life all his life and died without being able to fulfill his desire and when he’s given a task by a god, watch how he takes the protagonists girls while making it hard for the hero.

Liam who was born from a once prestigious household was found out to be a genuis of magic, genuis that appeared only once in a minnelium but as he reached the age of awakening the system it was found out that he was no different than a normal human although he had legendary skills they all appeared to be locked.Now living with his single mother who was struggling financially Liam could not bear to see his beloved mother in such a state.One day while on his way to town he mistakingly entered a dungeon and that marked the beginning of his new life...