One Piece: The Pirate Princess Is Esdeath

(The story begins ten years before the original plot. He recruits his own crew and captains his own ship, rather than joining another crew. He doesn't target the main characters. He has Esdeath's appearance and all her abilities, but isn't invincible. No System. Momonosuke must die.)

An Lin, one of Esdeath's die-hard fans, wakes up to find himself transformed into the Esdeath he adores beyond all else and transmigrated to the world of the Pirate King. From the start, he lands on an island in the East Blue teeming with pirates. With her stunning looks and extraordinary strength, he cuts down countless pirates across the East Blue!

He recruits powerful crewmates and forms a pirate crew of his own. Standing at the peak, Esdeath sneers, “I have no interest in becoming the Pirate King. I only want to enjoy the thrill of killing enemies on the battlefield! Everyone, the war begins!”

Ace: “Esdeath? Her name sounds a bit like mine. I wonder if she likes Soul-Shattering Pepper Pasta.”

Buggy: “S-She's a demon even more terrifying than Shanks!”

Mihawk: “So this is Esdeath, the Fifth Emperor of the New World, known as the Pirate Princess...”

Sengoku: “Esdeath is a pirate who's committed countless crimes! We absolutely can't let her establish a foothold in the New World!”

Akainu: “Hmph, a mere female pirate is no threat.”

Kaido: “Do you want to sign up for the Devil Fruit Awakening crash course too!?”