"Try Extending your fist back instead, Luffy." Ao said as he looked at a copy In front of him, The copy had various diagrams and formulas written all over it, On the other page, there were a lot of calculations that were done by him.
"Okay." Luffy said as he put his fist back. Ao facepalmed.
"Extend your arm!!" Ao told Luffy who laughed while scratching his head before doing as Ao Said so.
"I can't, it won't get longer." Luffy told Ao.
"Hmm. Rubber is something which has very high Elasticity and low plasticity, but if we extend your arm by
external means till you reach just below your plastic limits then you should have the same plasticity but also have higher elasticity."
Ao said as he wrote some notes down on the copy.
"Ah! I don't get it." Luffy put his fist on his palm.
"You don't need to understand it, just do what I tell you to. Now hold on to that tree very tightly, Don't let go." Ao said as he pulled Luffy's arm, Luffy attached his other arm to the tree.
"Say Yoho, if you feel pain, but don't let go, Okay." Ao said, Luffy nodded.
Ao pulled Luffy's arm as far back as he could, It was only a minute later before Ao was left Dangling with his arms being extended to 50 meters.
"Yoho!" Luffy said as he felt pain in his arms.
"Don't let go Okay, Keep this up for 5 minutes and I will give you meat." Ao said to Luffy who nodded.
Five minutes soon passed as Luffy was still dangling from his arms being extended allt he way.
"Does it hurt now?" Ao asked Luffy, Luffy shook his head.
"As promised, Here is some meat." Ao said as he handed Luffy a hefty chunk of that Big ol' meat.
"But, I will triple it if you extend your arms and extend your hands till you feel pain, and stay like that for another five minutes" Ao said as Luffy nodded.
"Okay." Luffy said as hands extended for 60 meters total till he started feeling pain.
Another five minutes passed as Ao brought two more large chunks of meat.
"You can let go now." Ao said a stuffy Hurriedly let go of his arms. His arms flew at Luffy at very high speeds until hitting himself with very high force.
"Owie."
Ao concluded his theory by writing down on his copy. Luffy's hands could extend for 30 meters each till they started hurting. Overall, each of His hands's length increased by 5 meters, which means that Luffy should be able to extend his hands just by swinging them back now.
***
"Now swing your arm back, This should hopefully work this time." Ao said to Luffy who nodded at Ao before Doing as Ao said.
"Ha, Gomu Gomu no..." Luffy siad as his arm extended 4 meters before it reached a certain point where He couldn't extend it anymore by just swinging it back.
"... Pistol..." Luffy said as the potential energy of his arms got released at one time. His arm was like a rubber band, the more you extended it and depending on the speed, The force increased or decreased.
"Wow, Congrats Luffy!" Ao said as he patted the strawhat wearing boy on the back.
"Yosh, I am already getting stronger. Shihshishi" Luffy laughed as he spun his arm around his shoulders.
"Now practice that move till you have good accuracy and speed with it, Or no meat for two days." Ao said as Luffy obdiently obeyed him.
"Gomu Gomu no pistol..."
"Gomu Gomu no pistol..."
Gomu Gomu no pistol..."
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