Pirate: I have a Hollow living inside me!

Xiao Yi is rather lacking in this aspect.

Therefore, training is required.

Fortunately, Xiao Yi had learned about this topic on the Sky Island.

However, Kureha found it too simplistic; she wanted to teach Yi her own unique skills.

It will last for half a month.

How much Xiao Yi can learn depends on herself.

Meanwhile, during these two weeks, Kureha also needs to transcribe the medical books she has collected.

This is the culmination of Kureha's life's work, and also the material for Xiao Yi's future medical training.

It covers almost all diseases and treatments found on the high seas, which is what helped Xiao Yi the most.

This transcription task will be left to the historian.

The flower-fruit combination is really useful...

One person can do the work of more than a dozen people.

Robin was able to copy down a room full of medical books in just a few days...

It is worth mentioning that.

Valbo is cold.

His Swallow Fruit was collected by Rocks.

Because his subordinates hadn't returned in time, this guy sent others to cause trouble.

As a result, these people were knocked down by Nami's electric shock, and Wapol, who didn't know the specific reason, also personally joined in...

Wapol was terrified when he saw that it was the Blackwing Demon Pirates.

But he still couldn't escape death.

Who told this guy to show malice while kneeling and begging for mercy?

He was probably thinking about notifying the World Government or the Navy when Rocks blasted his head off with a Hollow Bullet...

Ultimately, the Swallow Fruit was obtained by Rocks.

Rocks didn't care much about Wapol's situation; at most, he was pleasantly surprised to have acquired a Devil Fruit.

Rocks was more focused on Chopper's Rumble Ball...

Today is my third day on Drum Island.

Rocks saw Chopper making a Rumble Ball and curiously approached, feigning ignorance as he asked, "Chopper? What are you making?"

Chopper was still somewhat afraid of Rocks, but he answered all questions: "It's a special drug that can disrupt the transformation wavelengths of Zoan-type Devil Fruits. I discovered it by accident."

"I thought it might be useful, so I started researching it..."

"I see."

Rocks couldn't recall when Chopper completed the Rumble Ball creation, so he asked, "Is this drug finished yet?"

Chopper was delighted to see that someone was interested in the Rumble Ball he had developed: "Not yet, the side effects are significant. I'm trying to resolve these side effects."

What are the side effects?

"Eating it will kill you!"

"...Is it that serious?"

"An overdose will kill you, but an underdose won't. I'm currently adjusting the formulation to increase the potency of the medicine while reducing the side effects."

"Having ruled out side effects, is this drug truly complete?"

"If you really think that way... that's true! However, there's no such thing as eliminating side effects from medication; you can only minimize them as much as possible."

"That's amazing. No wonder you're Dr. Kureha's disciple. You've managed to do something like that."

"Oh, no...no!"

The undisguised praise made Chopper very shy.

Her tiny body writhed like a noodle: "Even if you praise me, I... I won't be happy!"

Seeing this, Rocks smiled. Chopper was indeed quite cute...

"A drug that can interfere with the transformation wavelengths of Zoan-type Devil Fruits, right?"

Then Rocks revealed his true intentions: "Could I try this medicine? I'm a Zoan-type Devil Fruit user too."

Chopper exclaimed in surprise, "You're also a Zoan-type Devil Fruit user?"

"Yes, I also have the Human-Human Fruit, but I am a Mythical Zoan type, Human-Human Fruit, Mythical Zoan type, Blackwing Demon form."

"This sounds much stronger than my Human-Human Fruit in Human Form..."

Locus: "..."

How should I respond to that?

If Oda doesn't patch it up, then the Human-Human Fruit's Commoner form is indeed not strong.

So, does making people "like humans" have any use?

Lockes cleverly changed the subject: "Drugs require experimentation, right? Right now, you can only treat yourself as the test subject."

"However, different drugs have different effects on different people, so the effects may vary in you and in me."

"That's right, but it's too dangerous!"

Chopper shook his head and rejected Rocks's suggestion: "Doctor Kureha said that drugs with unstable effects and large side effects cannot be given to others."

He is a doctor.

Doctors cannot give medication to others that has not been completed.

This is the principle that Kureha taught his doctors!

"Don't worry, I'm not afraid of danger at all, and I'm very interested in the drug you mentioned."

Of course, Rocks couldn't give up.

Rumble ball was another reason he came here.

He wondered if the effects of the Rumble Ball could work on him.

If possible, how would you present it?

"Well……"

Chopper was actually a little tempted.

After all, he was the only one who had ever used the Rumble Ball since it was created.

I wonder if it will work on other Zoan-type Devil Fruit users...

However, after thinking about it, Chopper still shook his head, firmly defending his bottom line as a doctor: "No, I'm a doctor, I can't give unstable drugs to other people!"

Locus: "..."

I admire your professional ethics as a doctor.

But you don't have to be so stubborn!

"Don't be so stubborn. Drugs require clinical trials, right? Without sufficient participants, the results might not be as accurate..."

After much persuasion, coaxing, and deception, they finally succeeded.

Rocks finally made Chopper's mind start to waver...

However, Chopper decided to ask Kureha's opinion first.

Kureha, who was teaching Illusion medicine, heard about this and, knowing that Rocks was determined to do so, said, "Since he offered it, why don't you let him try it, Chopper?"

"However, the dosage needs to be carefully controlled to prevent a recurrence of your previous condition. If he goes berserk, this island might be destroyed..."

Previously, Chopper was strictly prohibited from researching this drug, Kureha.

But the little guy is still secretly trying it out.

Left with no other choice, Kureha had to let Chopper do his research.

However, some restrictions were set, and it can only be done under the premise of ensuring safety.

Furthermore, Rumble Balls have an even more serious side effect: if the dosage is too high, Chopper will turn into a mindless "monster"...

Even Chopper is terrifying when he goes berserk, so imagine if "Black Winged Demon" Rocks went berserk...

That Drum Island might be completely destroyed...

"Will this island be destroyed?"

Chopper was startled, then nodded emphatically: "I understand, Dr. Kureha, I will control the dosage!"

Then, Chopper solemnly led Rocks outside the treehouse...

Rocks wasn't the only one who came along; Kuina, Nami, and Robin were also with him.

As for the others...

Little Yi is still learning from Kureha.

Yixiao went to the casino in the island town.

Wapa and Lachi were also interested in everything about Qinghai. This was their first time seeing snow, so they wandered around the island...

……

At this moment, Chopper took Rocks and his three companions to an open space.

"I named this drug Rumble Ball. It is a kind of substance that can interfere with the shapeshifting fluctuations of Zoan-type Devil Fruit users."

Chopper picked up the Rumble Ball and bit into it, saying to the others, "Eating this will allow Zoan users to transform into other forms."

"This is wrist strength enhancement...this is leg strength enhancement...this is fur enhancement...this is horn enhancement..."

Chopper ate a Rumble Ball and then demonstrated his different transformation forms.

'Pat pat pat...'