one piece: gene extraction and fusion system - Chapter 300: Wrath of the Sea Kings

Bai Yu traveled to the world of One Piece and activated the strongest swordsman system at the beginning.

No need to practice, swinging a knife will become stronger!

Thus, Bai Yu started his daily routine of wielding a knife.

Swing the knife 1000 times, and get the limit of physical strength – six styles.

Swing the knife 2,000 times to obtain the powerful Qinglong Sword Intent.

Swing the knife 3000 times, get three-color domineering.

General Huang Yuan: Bai Yu is the strongest rookie I have ever seen.

General Aokiji: My freezing ability was directly chopped into pieces by Bai Yu!

General Red Dog: Dangerous! My marshal position is about to change!

Hawkeye: Bai Yu is the number one swordsman in the world!

Since then, the name of Bai Yu has resounded throughout the world of pirates.

- Description from novelbuddy

The sinful act of Humanity brings forth a great calamity towards themselves, or so they thought.

Supernatural Emergence happened,

Supernatural Creatures start to come out of nowhere and forcefully claim half of the Earth and massacre any humans that crossed their paths. The Supernatural Creatures are way too powerful, dozens of countries fall under their diabolic claws. Humanity was pushed against the corner.

But things started to turn around when Humanity begins to Awaken magical power blessed by the gods. They are the pillar of humanity, and they're called Awakened.

Rex Silverstar is a normal human boy that has a traumatic experience on the day the Supernatural emerges, a Werewolf takes everything he had. He lost his family and his home, he's left all alone in the cruel world. But what drives him to live every day is his deep hatred towards the Supernaturals.

Rex decided to join the military in hopes to help exterminate the Supernatural from his early teens, he found out that it's impossible to kill the Werewolf that killed his parent without being an Awakened.

On a fateful night, In a near-death experience, When his soul was about to be taken by Death. He is given a chance by the full moon where his life will be turned around.

Given the chance to get stronger by a system and has the potential to match the Supernatural, Rex was ecstatic before he saw his stats window on the system.

“I'M NOT A WEREWOLF!!”

“Daily Quest failed, Decrease 20% Sanity Stat”

“Blood Moon will start in ten minutes”

“Sanity stat is too low to control the Blood Moon blessing!”

“Forceful Transformation will begin shortly”

“WHAT?! I'm a human! What transformation?!”

“You're Overwhelmed with Bloodlust!”

A novel adaptation of K, focused on the history of the blue clan and the events which led to Munakata Reisi’s appointment as the current blue king.

Chen Rui, an otaku from earth, is reborn into a human body in another world, who falls into the legendary evil, brutal world of the devil called Mozu where humans are treated as food. He has to survive while facing horrors of the devil, violent dragons and a variety of power enemies depending on a strange super system chip and his wits. Surrounded by Devil’s beauties such as black-bellied lolita princess, cold queens, violent dragons, charming poisonous devils …

Wanting to live in the Devil’s world is hard! Wanting to live in the Devil’s world as a human is harder! Wanting a human to be the devil’s son-in-law is hardest!

Let us see how a small otaku uses power and strategy step by step starting from an ordinary human to writing a legend as the devil’s greatest son-in-law.

- Description from Novelupdates