Dragoon - Dragoon 62: The Four Idiots and Fluff Disorder

A great demon king who came from another world to conquer Earth. To save the Earth, Li Luyou could only first take care of this great demon king… a little girl proclaiming herself Her Imperial Princess.

- Description from Novelupdates

Shin Kinghad is a kid that had been abducted and trained by a powerful underworld organization since he was three years old. After six years, he had been rescued by the Special Forces during their operation against that organization and was adopted by the captain of the special force group.

Since then, he treated the son and daughter of the captain as his own brother and sister.

Years later, he joins the greatest VRMMORPG of all time, [Destiny's Fate] online, due to repeated invitations of his brother. He creates havoc inside the game as he climbs his way from being a beginner player to a peak class expert.

But as he started to grow up, he became curious about his real identity and who his biological parents were. He tried to investigate it with the help of his brother and best friend. And after discovering his real background, he decided to follow his father’s footsteps and stood at the peak of the world using his Martial-Art Skills and Mentalism Techniques.

When he returned to the World of Martial Arts, the game was filled with blood and battles! Chen Kaixin had chased after the footsteps of the one emperor, two empresses, three princes, seven dukes, and thirteen aces for three years, but during the eve of the Sword Among Us tournament in Mount Hua, he was ambushed by evil bastards, and was killed so much that his level dropped to that of a newbie. He completely lost the chance to join the ranks of the powerful players in the game! In great disappointment, Kaixin quit the game and got drunk so that he could forget his sadness, but during that stormy night, Chen Kaixin found that he had actually dreamed for a total of three years, because when he woke up again, he woke up to three years ago, when he was still a student.

- Description from Novelupdates