The Seven Sisters and Their Hidden King - Chapter 423: Getting More and More Busy

Ron finds himself reborn in the world of One Piece, stranded on a remote island in the East Blue. But he's not just any ordinary child—he’s bonded to a mysterious sign-in system that grants him powers with every new location he visits.At his first sign-in, he unlocks the legendary Sun Breathing Technique, along with a boost to his vitality. From Shitmotsuki Village to Skypiea, Enies Lobby to Marineford, Ron travels the world, collecting extraordinary rewards that make him a force to be reckoned with. The Raikiri, one of the 21 Great Grade Swords, Armament Haki, Observation Haki, and more fall into his hands.As Ron steps onto the battlefield of Marineford during the legendary Summit War, the mightiest warriors—Four Emperors and Marine Admirals alike—pause, stunned by his presence. But Ron merely waves them off, “Don’t mind me. I’m just passing through.”Join Ron on his journey across the Grand Line as he signs in at iconic locations, growing stronger with every step. This is not just an adventure—it’s a legend in the making.

Introduction

In the ten years since the Great Chu, strange things have happened everywhere.

When he woke up, Zhou An became a yamen agent.

Crisis is always there, but fortunately Zhou An brought a small game made in his previous life.

As long as the life-exploding skills are used, the skills can undergo qualitative changes and become magical skills.

Knife skills – open the sky with one knife.

Turn the pot over – the Kingdom of God in the pot.

Swimming – making waves.

Several years later, Zhou An said that all he knew were common abilities in life.

The crowd was furious.

“You’re talking nonsense, I saw you split the sky with a knife!”

“You’re lying. I saw with my own eyes that you put a ten-foot-tall weirdo into a pot and beat it to death!”

“You said you can swim, but the huge waves have nothing to do with swimming!”

Facing the angry crowd, Zhou An sighed and took out a small sword as wide as his palm.

“I have learned a lot about blacksmithing recently, and I will show you how to defeat all magic with one sword.”

- Description from novelbuddy

To save the hopeless Dark Fantasy World, I held back my tears and destroyed the world, then killed the Demon King and returned.

Now, I’m trying to save the world using the ‘System’ I gained as the ‘Regressor’s Privilege’… but the Main Heroines have also awakened their memories of the previous timeline.

God damnit.

He wants indoor plumbing. They think he’s conquering the world.Arthur was a genius engineer on Earth, capable of optimizing global logistics and automating entire factories. But he lacked one thing: common sense. Now, reincarnated as Arthur von Pendelton, the six-year-old son of a powerful Duke in a medieval fantasy world, he faces his greatest challenge yet: Drafts.Armed with the T.E.C.H. Interface (Trans-Epochal Construction Heuristic), Arthur can analyze magic like code and build modern technology from scratch. His goals are simple: Double-glazed windows, hot showers, and a toaster that doesn't burn the bread.But there is a problem. The people of this world don't understand engineering.He builds a high-pressure boiler for a bath; his father thinks it’s a “Dragon-Breath Siege Weapon.”He creates a hydroponic garden; the local church declares him the God of Harvest.He ignores a Princess's flirting to analyze the thread count of her dress; she thinks he is playing “hard to get.”Follow Arthur as he accidentally industrializes a kingdom, terrifies his enemies with home appliances, and remains completely oblivious to the fact that he is becoming the most powerful man in history.All he wanted was a warm bath.