One Piece Chapter 36, page 19: HUNTED!!

Luffy's punch misses as Kuro suddenly vanishes from sight. Luffy looks around in confusion, gasping, "HE DISAPPEARED?!" With a faint metallic sound (SFX: CHARI...), Kuro suddenly reappears right beside Luffy, swinging his long claw-blades. Luffy barely reacts in time, shouting "UWOAH!!!" as he bends his body backward to narrowly dodge the deadly slash that cuts through the air.