MTL - Returning From Level 900 - Chapter 400 don't know who i am

In a land where no magic is present. A land where the strong make the rules and the weak have to obey. A land filled with alluring treasures and beauty, yet also filled with unforeseen danger. Three years ago, Xiao Yan, who had shown talents none had seen in decades, suddenly lost everything. His powers, his reputation, and his promise to his mother. What sorcery has caused him to lose all of his powers? And why has his fiancee suddenly shown up?

“As a firearms modifier, it’s normal for me to have better marksmanship, right? John Wick?” —— “The John Wick Series”

“As a private detective, it’s weird to solve the case faster than you, and better than you can fight? Zhou Xingxing?” – “Play Back To School”

“As a psychiatrist, shouldn’t the patients in Arkham Asylum listen to me? Bruce?” – “Batman”

“As an archaeological expert, a little knowledge of Feng Shui and tomb chambers, isn’t this a basic professional quality? Wu Tianzhen?” – “Tomb Raider Series”

“As an animal breeder, is it too much to keep some Godzilla and King Kong?” – “Monster Series”

 …

One world, one profession, let ordinary professions glow with new brilliance in the heavens.

- Description from novelbuddy

“I want to be a true demon.”

A boy not older than 20 years wished as he looked at the sky.

After suffering from the trauma for many years, he finally gave up on life.

People called him ugly, demon, and hideous.

He bared with it, but today he finally broke.

With a piercing pain in his chest, he died.

When opened his eyes, Logan found himself in another world and inside the body of a demon.

His wish was granted, but at what cost?

He had no power and was the lowest among the demons.

No one to help, no one to be with him.

But it did not affect Logan. Because he had something else with him.

‘Sin and Virtue System.’

Guiding him towards his goal to become a true Demon.

Logan’s conquest has begun, so be a part of it.

Otherwise, you will miss him.

The true Demon!

However, is the MC the 'only' one to have a system?

Hm?

Read the fucking novel and find out!

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