One Piece Chapter 36, page 14-16: HUNTED!!

Luffy, his face shadowed with intense anger, glares at the laughing pirates. He warns them in a low, terrifying voice, "IF YOU DARE LAUGH AT USOPP AGAIN, I WILL... KILL YOU ALL!!" The pirates' laughter instantly dies, and the skinny cat-eared pirate looks on in shock. Meanwhile, Zoro faces Buchi, who is charging at him. Zoro says calmly, "...HEY! BUCHI NEKO. YOU MORON. DON'T GET IN THE WAY. I THOUGHT I ALREADY WARNED YOU..." as Buchi screams, "SHHYAAA...!!!" and their weapons clash violently (SFX: CLASH!!).

With a massive, powerful swing of his swords, Zoro unleashes a devastating attack. He roars, "OUTTA THE WAY!!!" The force of the slash completely overwhelms Buchi, sending the giant pirate flying backward with a look of sheer shock and defeat.

Buchi crashes heavily to the ground, completely defeated. The remaining Black Cat Pirates, including the skinny cat-eared pirate, gasp in absolute horror, stammering, "AHH...!!! EVEN THE HYPNOTIZED BUCHI WAS..." Zoro calmly sheathes his swords with a click (SFX: CLINK). He turns to Luffy and says, "LUFFY, I'M GONNA TAKE USOPP AND GO AFTER THAT BASTARD HYPNOTIST! DO YOU HAVE ANY PROBLEM WITH THAT?" Zoro then picks up the battered Usopp onto his back (SFX: GABAA). Luffy smiles confidently and replies, "NOPE! GO QUICKLY!!" while Kuro watches them silently.