Hitting Up The Big Leagues with a Green Tea Personality - Chapter 18

Reborn into the world of Yugioh, it's natural if my goal is to become the best duelist!

In the year 2030 a world where magic reigns supreme, Ellard a being formally known as the “Mighty Overlord” who was humanity’s strongest.Had conquered many battlefields during his youth making his names known far and wide.However, during his last battle he was caught up in a plot made by the goddess of death who feared his existence due to his constant support to the goddess of vitality and was sent to his death for eternal sleep.However, the goddess of vitality was able to get to his soul while he was crossing the path between life and death, she granted him a second chance of life...Now one thousand years later he was reborn inside the body of a nine-year-old boy who had suffered a great misfortune after his father was assassinated and his mother had lost most of her noble influence, which resulted in their family suffering ridicule.

[You have become the master of the Warden Mansion.][Your first quest is to refine mana from one of your maids by having intercourse with her.]When nineteen-year-old Jett Talon suddenly wakes on an emperor-sized bed, he finds himself lord of a mysterious mansion where countless gorgeous maids stand ready to serve. His first companion is Mia, a blonde elven maid who checks his every box. After making love to her, Jett gains mana, unlocks legendary powers, learns his duties as Master of the Warden Mansion, and uncovers its hidden secrets.

A good-for-nothing man married a beautiful girl but was kicked off the bed on the wedding night. Furiously, he wrote a bill of divorce and ran away.
He was schemed a car accident in which he nearly lost his life. However, it turned out to be a blessing. He swallowed the soul that passed through the outer world, thus obtained superb medical skills and martial arts.
Later on, with the silver needles and invincible martial arts, he embarked on the road of counterattacks and was committed to his great dreams.

- Description from Novelupdates