[Regenerator Serum]: A high-tech product from an advanced world. After use, a severed limb can regrow. Side effect: the user will enter a brief period of weakness.
[Colorless Crystal Shards]: A special item which can be used to trigger certain ultimate moves or as a forging material.
[Worn Magic Wand]: A mage's staff. It looks shabby, but it is excellent for bonking people.
With this, wouldn't Zeff's leg be able to return? Sanji and Zeff would both be over the moon—especially Sanji. Zeff had lost that leg during the ordeal that saved him, and Sanji had carried the weight of that debt ever since. Now that the jar had produced a Regenerator Serum, everyone would be thrilled.
"Mr. Amon, well?" Before Zeff could ask, Sanji blurted it out, seeing the joy on Amon's face.
The others stared at Amon, just as eager to know what treasure had come out this time.
"Heh, Mr. Zeff got lucky. A very powerful item." Amon lifted the vial so all could see. "This is a Regenerator Serum. Just like the name says, it can regrow a severed limb. There is a brief weakness after using it, but it lasts about an hour."
"What! It can regrow a severed limb?"
The deck exploded. Sanji grabbed Amon's arm, eyes burning. "Mr. Amon, is that true? If the Zeff takes it, his leg will really grow back?"
Zeff looked at Amon with naked hope. He was the famed Red-Leg Zeff. No one valued his legs more than he did. He had resigned himself to a life with a crutch. To hear that his leg could return was almost too much to believe.
Meeting that hope, Amon nodded hard. "Yes. Drink this and your leg will grow back, the same as before. You will feel weak for about an hour. After that, you will be fine."
He passed the vial across.
"Thank you very much. May I know your full name, Mr. Amon?" Zeff's hands trembled as he took the serum. He bowed deeply. He wanted the man's full name, so he could repay this life-changing debt if ever the chance arose.
"Mr. Amon, arigatō!" Sanji bowed just as deeply. In his heart, Zeff was a father. Since the day Zeff lost that leg, the guilt had never left. Because of Amon, Zeff now had a chance to be whole again. This was a grace beyond measure.
"Haha, Mr. Zeff, you are too serious. I am Amon Nagi, a simple jar merchant. You drew the serum thanks to your own luck." Amon waved his hand. "Try it."
He did want Zeff to drink it quickly. The demonstration would be the best advertisement.
"Very well. Then I shall accept with thanks." Zeff could not wait any longer. Under everyone's gaze, he uncorked the vial and drank.
Heat coursed from his mouth down into the stump. A tingling bloomed there, and the pant leg that hid the missing limb began to swell.
"It is growing. It is really growing. Wonderful!"
The onlookers gaped as the cloth bulged and reshaped.
"It is truly growing back. I never dreamed my leg would return. Incredible." Tears filled Zeff's eyes. He had believed the crutch would be his companion for life. To feel new strength knitting where there had been nothing was like a dream.
"Great. Zeff, your leg is back!" Sanji was crying too. Seeing the new leg come in made him as happy as if it were his own.
While joy rippled across the deck, a cold voice floated from the line of ships behind them.
"Keh keh. It is impressive."
"Good. All of those jars now belong to the Don Krieg Pirates."
"Who is there?"
"Krieg, didn't you leave? Why are you back?" Everyone spun toward the voice. Three figures stood there, the same trio who had stirred up trouble in the restaurant earlier. No one knew when they had returned.