Age of Discovery: The Ghost Swordsman Aboard the Straw Hat Ship!

Abel transmigrates into the world of One Piece and eats a Devil Fruit: the Mythical Zoan Human-Human Fruit, Model: Oni.

He becomes a swordsman who can wield the power of demons!

As luck would have it, he runs into Luffy just after he sets sail.

At Luffy's invitation, Abel joins the Straw Hat crew.

But Abel soon makes an astonishing discovery.

Whenever he defeats a boss from the original story, his Devil Fruit mastery improves.

"Kuro, caught by my Soul-Snatching Hand, and you still think you can get away?!"

"Enel, I hear you're as fast as lightning. Sorry, but my Soul doesn't agree!"

"Crocodile, one of the Seven Warlords of the Sea? What a shame. In my Asura state, my Observation and Armament Haki are already maxed out!"

When Abel awakens his powers and unleashes one demonic domain after another, throwing out powerful third-awakening moves as if they cost nothing, even Teacher Kaido can no longer take it!

Kaido: Teacher Abel, please stop showing off your powers! I won't blow up Wano anymore!!

P.S. You don't have to play DNF to enjoy this. One Piece fans are welcome too!

This novel and its characters are entirely fictional. Any resemblance to actual people or events is purely coincidental. Do not imitate.