One Piece: I'm a Saiyan

[Pirates + pure Pirate power system + Mink Tribe (Saiyans) + building a faction + adventure]

Lot, a manga fan, is especially fond of the Pirate King manga.

He wakes up one day transmigrated into the pirate world, and has even become a Saiyan!

See how he leads powerful members of the Mink Tribe who never appeared in the original story, commanding countless monsters to roam the world and reshape it!

Bullet: “How come your Armament Haki is so much stronger than mine? And teach me that whatever-it-is, Flight Technique, and Tailed Beast Bomb, right now! If you can make me stronger, I'll follow you!”

Kaido of the Beasts: “Wahahaha! Kakarot! Let's start a huge war!”

Monkey D. Dragon: “You are the leader of our revolution!”

Hades (King of the Infernal Ants): “Let me lead an army of monsters and follow in Kakarot's footsteps!”

The Five Elders: “Impossible! Why are even the Marines helping you? Impossible! How can you be beating Lord Imu so badly?!”

Kakarot: “Hahaha! Comrades! We will reshape the world and build an entirely new one!”

(Countless people scream: “Lord Kakarot! You're the coolest! We will love you forever!”)

Since I've transmigrated into the world of my favorite Pirate King, I will rid this world of its cancers and fill it with goodness.

I will cleanse the darkness from the world. In the name of the Saiyans, I will bring the Celestial Dragons to an end. (Only some Saiyan racial traits are used, so the power levels aren't ridiculously over the top. It still follows the pirate world's power system.)