The Devil's Fist! A Show Down! Luffy vs. Grount!

Prodi fire at Brook and the Shark Submerge III before firing hake-infused shots from his bazooka at the group, while his men use rubber-coated shields to counter Nami's and Carrot's electrical attacks. However the Sanji Retrieval Team beats them using physical attacks. Bonham and Zappa prepare to join the fight but Grount, having lost his fighting spirit, refuses to come. After Bonham berates him Zappa tells Grount to remember what Aokiji taught them. As Luffy manages to defeat Prodi, Bonham and Zappa confront him. Grount remembers how in is youth, after eating a Zoan Devil Fruit, his left arm transformed into a large, hairy red arm resembling a gorilla's, but ended up destroying an island due to not being able to control it, before being subdued by Aokiji who trained him as a Marine. Years later, Aokiji tells Grount (who had is left arm contained in a metal attachment) no matter how strong he is, he may still lose to powerful opponents, but it's want he does afterwards that matters. Back in the present, Luffy defeats Bonham and Zeppa and prepares to leave From Island. However, he is confronted again by Grount, having regained his resolve, who shatters the attachment on his left arm to reveal its true form. Having trained all his life to control it, Grount wields its tremendous power against Luffy, but after a titanic struggle Luffy eventually manages to overpower and defeat him. As the Sanji Retrieval Team finally leaves Fron Island, Grount laughs and remarks that Luffy was a worthy opponent. On the Thousand Sunny, the Sanji Retrieval Team eats all the rations taken from the base in ten minutes.