Grandpa—Monkey D. Garp, the Marine Headquarters vice admiral whose might shook the Four Seas—had devoted his life to maintaining world peace and fighting evil forces.
Yet unexpectedly, he had placed great hopes on his grandson Luffy, determined to train him into an outstanding Marine commander.
To that end, Garp had racked his brains and tried every possible way to steer Luffy onto the right path.
Unfortunately, things did not go as planned. Rather than growing according to his grandfather's expectations, Luffy had chosen a path filled with adventure and challenges—to become a great pirate!
Since setting out to sea, Luffy had endured countless trials between life and death.
And throughout that long journey, he had even been fortunate enough to reunite with his grandfather twice.
This time, during a fierce naval battle, Luffy's pirate ship had run headlong into the Marine fleet under Garp's command.
Garp stared at that familiar pirate ship, so furious that his beard bristled and his eyes bulged.
"You little brat, Grandpa won't go easy on you today!" he roared, preparing to attack.
Standing at the bow, Luffy grinned. "Grandpa, don't waste your breath! I'm the man who'll become the Pirate King!"
With that, he launched the first attack and charged toward the Marine fleet.
The battle was exceptionally fierce. Relying on the powers of the Gum-Gum Fruit, Luffy darted left and right, leaving the Marines unable to guard against him. Though Garp was angry, he was secretly proud of Luffy's growth.
Just as neither side could gain the upper hand, a mysterious ship suddenly appeared at the edge of the battlefield. The people aboard seemed to be waiting for the right moment.
Neither Luffy nor Garp noticed that an even greater crisis was quietly descending...
When they first met, Luffy had only been a fledgling