Sean came to the world of One Piece, and the instability of the time and space rift caused him to fall into the sea.
The Roger Pirates happened to be passing by.
Sean became a trainee crew member on the ship of the future Pirate King Gol D. Roger.
Get the dragon-slaying magic template system, activate the iron dragon-slaying magic at the beginning, and progress with the battle.
Until Sean fully masters the magic...
What follows is
Heaven's Dragon-Slaying Magic…
Thunder Dragon Slayer Magic…
Light and darkness, fire and shadow...
A few years later
The era of great pirates was opened by Roger...
Sean…
Became a legend.
The pirates were beaten to such an extent that no one dared to refuse, the navy was frightened, and the world's lords couldn't keep anything secret...
This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.
