[Unbeatable background, no system, multiple female characters, doesn't eat beef]

This book is also known as [One Piece: The Strongest Background King] and [Because I don't eat beef, Im said I'm too extreme].

Ace's father was the Pirate King Roger, Luffy's father was the Revolutionary Army leader Dragon, and Teach's father was the former ruler of the seas, Rocks.

Alright, alright, so the world of One Piece has entered the era of relying on one's father's connections, huh!

My name is Narona Ian Saint. My mother lives among the flowers year-round. The Five Elders kneel and call me Young Master. The Knights of God are my personal guards. What do you have to fight me with?

Comparing family backgrounds? My family has a history of 800 years, but it can't compare to your family's three generations of hard work.

"Kicking the Celestial Dragons like a football? Who is this guy to be so arrogant?!"

"What? The Five Elders actually called him Young Master? Then it's alright!"

"They kidnapped Princess Vivi to the Holy Land, and then blew up a restaurant just because she wouldn't eat beef. Is there no law left?"

Ian: "Which law says you can't do whatever you want? I'll make my mom change it!"

Xia Chen unexpectedly transmigrates to the world of One Piece, activating the story island check-in system right from the start.

"What? You get stronger just by clearing story islands? Doesn't that mean you're about to take off?"

Upon visiting the first island, Windmill Village, I obtained the Zoan-type Mythical Beast Fruit, the Great Sage Equal to Heaven form!

Is Nika the Sun God really that powerful?

Do you know that even if you become a god, you're just one of the 100,000 heavenly soldiers and generals who can stop me?

He then happens to meet Luffy, who is just about to set sail, and at Luffy's invitation, becomes the vice-captain of the Straw Hat crew.

Join the main characters as they explore story islands and grow stronger!

...

The synopsis is insufficient; please proceed to the main text, which primarily focuses on the bond between the protagonist and the Straw Hat crew members.

The journey through Douluo Continent and failed to hold Tang San's thigh. Bai Yu thought that he could only live a salted fish for the rest of his life and wait for death. Unexpectedly, I awakened the spiritual cultivation and mission system. As long as I give the body spirituality, whether it is the body, martial soul, or soul ring, I can automatically practice! "Your body has gained some understanding by observing Tang San's use of the ghost shadow mystery, and your progress in learning the ghost shadow mystery has increased to 100%. Congratulations, you have learned the ghost shadow mystery!" "Your martial soul Blue Silver Grass has gained inspiration from Mikoto Misaka's battle, inspired the fighting spirit, and obtained the thunder attribute!" "Your soul ring has gained incentives because of observing the battle of the strong, and its cultivation efficiency has been temporarily greatly improved. It is expected that one day of cultivation can increase its age by three years!"... Bai Yu has not tried hard, but

"Traveling through the Douluo Continent, there is no powerful innate soul power, nor a powerful martial soul.

Notting City.

"What's the matter, isn't the running over, why are you still running?"

"Damn, this guy practices swordsmanship at night!"

Shrek Academy.

"Su Ming, stop adding weight to your body, please~" - Seven Monsters.

"Su Ming, my body can't take it, you practice by yourself." - Zhao Wuji.

Fighting Soul Arena.

"Referee, I protest, he actually used his left hand, this is a contempt for me!"

"Damn, it's a 2v2, you kicked your teammates off?"

...

There is no way, my family is poor, I have no choice but to work hard - Su Ming.

"Why do I always feel like I'm living under your shadow?" - Tang San."

[Momonosuke must die, the deserter king must die, kill the Celestial Dragons, collect supernovas, don't lick King Luffy, multi-ability person]

The veteran pirate fan Kuchi, wearing One Piece, met Robin by chance and discovered that he could possess seven devil fruit abilities at the same time.

So he ate the Quick-Severing Fruit, cut off an island with one strike, and competed in swordsmanship with the world's greatest swordsman.

He intercepted the Ghost Fruit, became the Ghost King, and competed with the Four Emperors BIG MOM in soul power.

He plundered the thundering ability, gained the fastest speed in the world, and competed with the Navy Admiral Kizaru in speed.

He forcibly snatched the artificial Blue Dragon Fruit and fought against Kaido and his two dragons in the sky above Wano Country.

Fate had never been kind to Ji Ning. Wracked by illnesses and infirm his entire life on Earth, Ji Ning knew early on that he would die as a teenager. What he didn’t know was that there really was such a thing as life after death and that the multiverse was a far larger place than he thought.

A lucky twist of fate meant that Ji Ning was reborn into a world of Immortals and monsters, of Ki Refiners and powerful Fiendgods, a world where Dynasties lasted for millions of years. A world which is both greater… and yet also smaller… than he ever could imagine. He would have the opportunity to join them, and in this life, Ji Ning swore to himself, he would never let himself be weak again! The Era he was born into was a Desolate one, but Ji Ning would make it his era.

Video games are one of the important ways to entertain people in the new era.

However, Take Yuxing from Japan, who traveled to a parallel world, found that the game industry in this world was extremely sluggish, and it seemed that it had never arisen.

So Zhu Yuxing decided to bring the ninth art to the world.

“Mom, Super Mario 3 is out! This is my most wanted Christmas present!”

…

“My Zelda is addicted to picking branches and has no intention to save the princess”

“It was Link who saved the princess!”

“Huh? Is it? Well Zelda”

…

“I am willing to sacrifice my soul just to protect the fire girl!”

…

“More than racing, Forza is YYDS!”

…

“Tifa is my eternal goddess!”

Games never sleep, this is a story that will only focus on developing the game entertainment industry.

(This story is a parallel universe and does not insinuate any related characters. Any similarity is purely coincidental)

No talent for ninjutsu? Then carve a bloody path with your sword!

Traveling through the world of Naruto, Yongen unexpectedly became an orphan in the Hidden Mist Village.

Without a surname, without chakra talent, unable to practice ninjutsu, and unable to even learn the most basic illusion techniques...

Fortunately, Yongen has awakened the [Proficiency System] - as long as he practices repeatedly, he can become infinitely stronger!

Swing your sword a million times and unlock the title of [Sword Saint]!

Everything in the world will be killed!

Even if one practices Chakra thousands of times without any talent, he can still forcibly upgrade to the Six Paths level!!!

With his physical skills trained to the extreme, Yongen's body even surpasses the Eight Gates of Ninjutsu, and he can shatter Susanoo with a snap of his fingers!

Under the cruel rule of the Blood Mist, he endured and grew up.

"Others practice ninjutsu, I practice swordplay."

"Others learn illusion techniques, I practice swordplay."

"Others are dating, but I'm still practicing swordplay!"

Until two years later——

"The Fourth Mizukage? One sword!"

"Akatsuki? Two swords!"

"Mei Terumi? ...Wait, what did you say? You want to marry me?"

[Single female protagonist Hermione + mainly based on the movie plot, later plot changes + system]

Kevin traveled to the world of Harry Potter and grew up in an orphanage without ever coming into contact with magic. It was not until he was 11 years old that he finally received the admission letter to Hogwarts.

Reborn, he just wants to enjoy this magical journey, but as time goes by, he can't help but get caught up in it...

- - - - - - - - - - - - - -

Snape: Kevin? Humph! Just a cocky brat with a bit of talent.

Dumbledore: Kevin is such a good boy who would go to great lengths to help his friends.

Voldemort: Kevin, this unethical and despicable villain! He has attacked me with a crowbar every time I die!