Kakashi's eyes widened.
He wiped the blood from the corner of his mouth and emerged from the ruins.
That hurt a little.
He had actually smashed through a rock.
That brat Luffy was really strong.
No wonder he was Vice Admiral Garp's grandson.
His growth rate was astonishingly fast.
Compared to the children of the Ninja World, people in the Pirate World really did grow faster.
What Kakashi did not know was that the Luffy before him was no ordinary person.
He was the absolute protagonist, the man destined to become the Pirate King.
So there was nothing surprising about that rate of growth. Even something more outrageous was possible.
After all, the Gum-Gum Fruit was actually the Nika Sun God Form.
Having gotten serious, Kakashi hung his ninja sword back on his body.
Though he came from a family with a strong swordsmanship tradition and his blade skills were formidable.
Kakashi's strongest talent was ninjutsu.
Since a childish spar was no longer enough to satisfy Luffy, he would get serious.
"Then let me show you my true strength."
Kakashi said with an air of smugness.
He was someone who cared a great deal about saving face.
"Sure!"
Luffy laughed carefree, rubbing his nose as he spoke.
Kakashi rapidly formed hand seals.
His figure vanished from the spot in an instant. The next second, he appeared behind Luffy and shouted:
"Ninja Art: Water Style: Water Finger Gun!"
As Kakashi repeatedly fired finger guns.
Water continuously shot from his fingertips.
It was much like Ace's Fire Gun.
This was a ninjutsu Kakashi had created himself. After learning that water restrained Devil Fruit users.
He had immediately begun researching it.
After all, Water Style techniques were not especially powerful ninjutsu.
Or rather.
Though Water Style looked fierce and could even alter the