One Piece Chapter 5, page 10: CHAPTER 5: THE KING OF THE PIRATES AND THE MASTER SWORDSMAN

Zoro continues his intense night training, sweating and panting. Kuina watches him from the shadows. Zoro stops and challenges her: "KUINA! I CHALLENGE YOU TO A DUEL... WITH REAL SWORDS!!" Kuina is surprised but smiles confidently, drawing her sword: "REAL SWORDS? OKAY... YOU'RE NOT AFRAID OF REAL SWORDS, ARE YOU? IT'S YOUR FUNERAL." Zoro takes his stance, shouting, "ON GUARD!" Kuina replies, "I'M READY!" as they prepare to clash.