One Piece: Building a Band of Justice at Age Ten

[Slow-burn, overpowered protagonist + swordsman from Shimotsuki Village + everyday humor] He keeps his head down early on, has a blast in the middle, saves characters whose stories ended in regret, and relies on his strength to navigate between three factions.

Why did watching a video make me end up in the world of One Piece?!

I landed at Isshin Dojo from the start, became Kozaburo's student, and prepared to pursue the path of the world's greatest swordsman.

I intercepted Sabo, the Flame Emperor, on Mount Colubo, raised Kuina into a great swordswoman who wields Zangetsu, and before I knew it, Paien had assembled a gang of righteous thugs...

During the Paramount War...

Marco: “Hey! Sabo, tell your captain to meet up at Marine Headquarters. Get ready to turn the world upside down!”

Benn Beckman: “Shanks, contact him right away. Now that Whitebeard has joined the war, the situation is beyond saving. Paien's bloodlust is too intense, and he's running wild on the battlefield. He could throw the whole world into chaos.”

Jack the Drought: “Who do you think I am? Turn this ship around! Those self-proclaimed righteous lunatics again. They're ready to start a war with Kaido just for a few unrelated civilians!”

Charlotte Linlin licked her lips. “Children, the leader of those thugs, Paien, will be your next father!”

(The System plays a minor role. The early story focuses on building the team.)