The Rebirth of My Father in the Body of an Aloof Academic Genius - Chapter 11: Two Percent

A young man playing games in his basement is struck by a mysterious bolt of lightning, killing him instantly. However, he wakes up in the body of a disgraced young lord, now tasked with managing a ruined, crumbling kingdom. With no experience and a tarnished reputation to overcome, his future seems bleak.Fortunately, he possessed the Omnishop System, a mysterious tool that enabled him to purchase skills and supplies as well as upgrade his existing skills using points. Rebuilding the kingdom is no easy feat, but Alexander has his sights set on more than just survival.With ambition burning in his heart, he dreams of ruling an empire, if he can survive the challenges ahead.

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

Xu Jun finally defeated the BOSS–the Dark Demon King, in this stand-alone, virtual reality game. When he wanted to go out to browse Weibo and express his mood, he suddenly encountered a game BUG and immediately passes over to the game world.

He became the man who finally took down the Great Demon King in this world. Gratifying! The attention of millions of people!

……However, he did not know the development of this world was not the same as the game, the Demon King did not die, rather his soul entered into Xu Jun’s body; this Demon King knows of all the stupid things Xu Jun does everyday…….

- Description from Novelupdates