Luffy transformed into Gear 4, and the skies responded with a torrent of rain. Nami, seizing the opportunity, summoned more rain clouds, drenching the battlefield. The downpour hindered Cracker's ability to create new Biscuit Soldiers, leaving him vulnerable.
Undeterred, Cracker revealed his last resort: a powerful Biscuit Suit that could withstand even the relentless rain. The suit proved to be a formidable barrier, protecting Cracker from Luffy's attacks.
Determined to end the fight, Luffy advanced, covering his hands with Advanced Conqueror's Haki and Ryou. With a mighty swing, he struck Cracker with a devastating blow. However, Luffy's eyes widened in confusion as he realized he had no idea what kind of attack he had just used or how he had managed to defeat Cracker.
Cracker crumpled to the ground, defeated. As the rain ceased, Nami's expression turned worried. She had forgotten to inform Luffy about Sanji's capture by Brule. Before she could speak, Luffy's eyes lit up with determination.
"Let's go save him!" Luffy exclaimed, still looking puzzled about his previous attack. With a newfound sense of purpose, Luffy and Nami set off to rescue Sanji, unaware of the challenges that lay ahead.