The Thousand Sunny sailed through the calm waters of the East Blue, its crew enjoying a rare moment of peace. Goku stood at the bow, scanning the horizon for any signs of adventure.
Suddenly, his Ki detection flared. "Luffy, we've got company!" Goku shouted.
A marine warship emerged from the distance, its cannons blazing. The Straw Hats sprang into action.
"Marines!" Luffy growled. "Let's show them our strength!"
Goku grinned. "I'll take point."
With a burst of speed, Goku intercepted the marine warship. His Kamehameha wave shattered the ship's cannons, sending the marines scrambling.
The Straw Hats cheered as Goku returned, his aura blazing.
"You're incredible, Goku-san!" Nami exclaimed.
Goku chuckled. "Just doing my part."
The marines, however, refused to yield. Their commander, a ruthless veteran, sneered at Goku.
"You may have taken down our ship, but you won't take down our pride!"
Goku's eyes narrowed. "Pride won't save you from justice."
The battle raged on, Goku clashing with the marine commander. The Straw Hats fought alongside him, their bond growing stronger.
As the dust settled, the marines retreated, their warship crippled.
"Well done, crew," Luffy said, grinning.
Goku nodded. "We make a good team."
But amidst the celebration, a mysterious energy signal flickered on the horizon.
"What's that?" Usopp asked, frowning.
Goku's eyes locked onto the signal. "Trouble."
"End of chapter 4"