MTL - My Backyard is the Tang Dynasty - ~ explain!

“Transmigrate as the Final Villain of the novel...” Ark stared at his reflection in the mirror he held. It was Theos Von Fallen, the final villain of his favorite novel.Although he was the final villain and the strongest in the novel, he was killed by the protagonist and his harem in the finale.[Ding. The Heroine Snatching System has started] Ark gave a crooked smile when he read the system message in front of him... “Exchange!” he shouted, unwilling to accept the fate they had in store for him.Trapped in the world of his favorite novel as the most “evil” and powerful villain, Ark, now Theos, will use his knowledge as a fan obsessed with the novel to take away all the protagonist's opportunities.Whether he can become the focus of the whole show or whether a script will dictate his fate, he will decide! He will live as a true villain who doesn't care about anything but his life and his loved ones.

Before he was a little over 10 years old, he was the nightmare of the Gorge of Heroes and the headache of countless people that had been abandoned by the world.

After leaving the Gorge of Heroes, he became a legendary figure of the number one academy in the continent, and he alone brought numerous changes to it.

Thereafter he stepped foot onto the continent to become a legend, but the road to become a legend was far more difficult than he’d imagined….

On a continent where puppet masters reign supreme, using anything and everything as weapons: living creatures, shoes, daggers, pendants, clothes, shields, guns — which they call puppets, this is the story of Bai Xiaofei with his trusty sidekick, Huskie, on a quest to find out exactly what happened to his parents and become the greatest illusion stream puppet master the world has ever seen. This is a story of wit, plot twists, love, strategy, cultivation, humor, and the unknown.

Traveling through the world of pirates, Shane fell from the sky and knocked out Shiki, the golden lion who was patrolling the floating island.

With a dazed expression, the large beasts on the island heard the sound and opened their bloody mouths one by one.

Fortunately, the system was awakened, and at the beginning of the game, he obtained the full-level overlord and domineering.

Xia En was full of firepower, stunned millions of beasts, awakened the golden lion, and vowed to accept Xia En as a disciple.

Since then, this sea has completely fallen into rampage because of his appearance.

“The indescribable monster born under the Golden Lion Gate appeared in the sea!”

“The evil generation Shane established an evil pirate group.”

“The despicable and shameless pirate Shane begins his bloody journey.”

“The emperor-like Shane led his kings across the great route.”

“The great Lord Shane has arrived at his faithful holy place, Mary Joa.”

“His Majesty Shane, the unparalleled nobility, delivered a fatal blow to the dictator of the World Government.”

…

On the Red Earth Continent Pan Ancient City, Xia En stepped on the Void Throne and looked down at many sea powerhouses.

“I come, I see, I conquer!”

- Description from novelbuddy

A data loving young man from Earth has an accident which transports him to a dark land filled with terrifying creatures and magical powers. Fortunately for him, he has a Biological Assistance Chip to ease his path. However, things in this bizarre and strange world are not always as they seem, and, though it is a tremendous asset, the chip doesn’t always work as expected. With all of the crazy creatures and magical mayhem around him, one can only wonder what the future holds for this young man…