One Piece Chapter 51, page 8: Roronoa Zoro Falls Into the Sea

Johnny and Yosaku cheer desperately from their boat, shouting, "Come on, Bro! Show him what you've really got! Come on!" The onlookers are amazed, noting, "He's easily taking on Roronoa Zoro's 3 swords with that little thing!" Mihawk notes Zoro's "such ferocity..." as Zoro continues his relentless assault. In his mind, Zoro remembers his childhood training, thinking, "I didn't train so hard until today, just to fight against this stupid little toy...! I trained to win!" A flashback shows young Kuina smiling and saying, "You're lucky you're a boy, Zoro....I wanted to become the world's best too!"