One Piece: Your Master Is Seriously Strong!

The protagonist accidentally transmigrated to the world of the Pirate King. The Pirate King's son shamelessly insisted on becoming his disciple, and he had no choice but to accept.

War clouds gathered, and a great battle was about to erupt. Looking around, he realized that eight or nine out of every ten top fighters were his own disciples and grand-disciples.

The Four Emperors and Marine Admirals looked at him as if they'd seen a ghost.

What?

You have a million Marines and an alliance of a million pirates? And the Celestial Dragons have your back?

Sorry.

I have tens of millions of top experts from countless worlds...!

This novel and its characters are entirely fictional. Any similarities are purely coincidental. Do not imitate.