One Piece Chapter 6, page 14-16: Chapter 6: Number One

With a ferocious "WHOOOSH!", Captain Morgan swings his massive axe-hand down at Luffy, roaring, "DIE!!" Luffy agilely leaps high into the air, narrowly dodging the lethal strike. The giant blade slices clean through the wooden fence and deep into the ground with a sharp "SLISH...!" sound effect. Watching from a distance, Koby is amazed by the destructive power, exclaiming, "WOW! THAT'S SHARP!!

While still mid-air, Luffy delivers a powerful flying kick straight into Captain Morgan's face with a solid "WMP.." and "UNGH!" impact. The force of the blow sends the massive Marine captain sliding backward across the dirt yard, leaving a trail of dust with a loud "SKKK!!" sound effect. The watching Marines are left speechless, stammering, "TH-THE CAPTAIN...

Morgan slowly pushes himself back up, his face contorted with rage. He growls, "BOY..." and raises his massive axe-hand once more, declaring, "I SENTENCE YOU TO DEATH!" He swings the giant blade down with a powerful "WHWNK!" and "FWOOSH!", but Luffy quickly dodges the strike, keeping his distance.