Episode 495. Especially that Rubber Whip—the way he exerted force was exactly like the basic whip kick taught in textbooks, only Luffy had altered it beyond recognition with his Devil Fruit Ability.
The cigarette Sanji had just lit fell onto the beach with a snap.
"You taught this brat?"
"This idiot who can't do anything but eat?"
Nami covered her mouth, her eyes wider than Chopper's antlers, while Usopp's jaw nearly hit the sand.
He scrambled to his feet, pointed at Luffy, then at Mu Chen, his voice trembling violently.
"H-How is that possible?"
"Luffy was taught by a Marine Admiral?"
"Then why does he still want to become a pirate?"
"And even damage the World Government's flag?"
Standing behind the crowd, Robin watched Mu Chen's exasperated expression and suddenly burst out laughing. "Who would acknowledge you as their teacher?"
Luffy spun around sharply, yanking his Straw Hat crooked and exposing the veins bulging on his forehead. "You call that pampering?"
"You threw me into the sea at seven to train me to hold my breath, and you even stole the jerky I hid! You were clearly bullying me! You're nothing but a bastard!"
Whenever Luffy thought about what Mu Chen had done, his anger flared up. Hearing his words, everyone was left dumbfounded. Hating someone for stealing jerky was indeed something Luffy would do.
"Old soldier, look. This is the ungrateful wretch I taught. I put him through special training, and now he calls me a bastard every other word. Can you still blame me?"
After Mu Chen put it that way, Robin did not know what to say. She looked at Luffy on the beach and helplessly shook her head. She knew that her captain was good in every way except that his brain was really a little