Age of Discovery: The Card Mage Aboard the Straw Hat Ship

Rog, who was playing Yu-Gi-Oh!, transmigrates to the world of One Piece and obtains a Card System.

As long as he takes on the bosses from the story, he can obtain all kinds of Yu-Gi-Oh! cards.

At Luffy's invitation, Rog joins the Straw Hat Pirates.

Pacifistas? In front of Ancient Gear Golem, they're nothing but scrap metal.

The enormous Sea Kings? They can only howl in agony under the terrifying power of Thermal Dragon.

Souls of antiquity, hounds forged of machinery, unite those ten heads as one and unleash the ultimate power of chaos!

Fusion Summon! Appear, Ancient Gear Chaos Giant!

The Five Elders: "Ancient Gear? That's technology from an even more ancient civilization!"

Kaido: "What is that thing, a living creature or a machine? How can my prized body be so utterly helpless against it?"

Rog: "I just wanted to take a spontaneous trip..."

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