Such a System

The Dimensional Potion System—this was the accessory Zhou Duan brought with him when he crossed over. Of course, it was a pretty impressive accessory.

The Dimensional Potion System, as the name suggests, was a system tied to potions. Whenever a researcher developed a new potion, it would be recorded by the system. Based on the potion's effects and efficacy, the system would grant corresponding rewards. Of course, the potions developed by the researcher had to have practical utility—they had to genuinely enhance or harm the human body.

As a pharmacist, Zhou Duan originally wanted to use the herbs of the Naruto world to develop potions that could unlock potential and boost chakra. But the system told him these potions had already been researched and recorded by other transmigrators, leaving no room for Zhou Duan to develop them. With no other choice, Zhou Duan was forced to create these Madman Potions, Clothes-Bursting Potions, and all sorts of other chaotic nonsense!

But chaotic as they were, the things Zhou Duan developed were indeed recognized and recorded by the system. And the system's rewards were truly generous—the Brain Activation Potion formula to enhance brain potential, the Chakra Growth Potion formula to constantly stimulate and increase chakra, various precious herb data, advanced medical tools, and so on. It was precisely because of these that Zhou Duan achieved the strength of an ordinary Genin in just two years and became a Medical Genin in over a year—a rank that took others five or six years of accumulation to reach!

But high rewards meant high risks. The system satisfied Zhou Duan in every other aspect, except for one thing... this system would issue tasks at irregular intervals!

Zhou Duan still remembered the first task the system issued—personally kill Kaguya. The researcher could fight independently or lead ninjas whose strength had been enhanced by the host.

Note: Over seventy percent of the damage dealt to Kaguya must come from strength enhanced by potions. If it falls short of seventy percent, the researcher will be forced to cross-dress and be surrounded by a group of freedom-loving muscular men for indescribable acts!

Such a ridiculous task made Zhou Duan, who originally wanted to lie low and coast through life, extremely frustrated. But there was no way around it—Zhou Duan still hadn't found a way to break free from this system, so he could only resign himself to fate. This was also the reason Zhou Duan frantically experimented with new potions, hoping to quickly obtain better potions and experimental tools, causing chaos throughout Konoha.

"Thank goodness, there's still plenty of time. Although the potions provided by the system don't include anything that can directly kill a high-level being like Kaguya, as long as I keep researching and accumulating experience, I'll eventually develop powerful potions. I just wonder, with all these potion formulas in the system, why hasn't anyone thought of a potion that fuses three or more chakra natures? Look at the Tsuchikage—All-Creation: All-Stripping Jutsu is almost an unsolvable existence. If I can create a dozen people who can use this jutsu, surround Kaguya in a circle, and attack seamlessly, even she would have a headache, let alone fusing four or even five natures, or even integrating Sage Mode on top of that?"

Zhou Duan pulled his thoughts together and looked at Jiraiya, who lay in a miserable state on Konoha's hospital bed. If not for the task, Zhou Duan wouldn't have had the heart to disturb Jiraiya right now:

"System task—Defeat the Genin who came to provoke. Due to the researcher's potions, Konoha Genin Moshang Shizhen suffered an extremely tragic fate. Moshang Shizhen swears to make the researcher pay. Note: To test the researcher's years of research results, during the battle between the researcher and Moshang Shizhen, no jutsu beyond the Basic Jutsu may be used. The researcher must defeat the opponent using only the potions they have developed! Task reward: A potion formula suitable for the researcher's current strength. Failure: The researcher is forced to wear a maid outfit and perform a hot dance in front of the entire class for one hour!"

"Tch, what a formidable task. Thank goodness I've never slacked off in my research over the years, or this would really be a dead end. But to complete this task, I really need Jiraiya... Hmm?"

Although Jiraiya, as an elite Jonin, possessed extremely skilled disguise techniques, as a Medical Ninja, Zhou Duan immediately noticed that Jiraiya, who had just woken up but immediately pretended to sleep, had slightly trembling eyebrows and a violently pounding heart!

"Tch!"

Spitting disdainfully, Zhou Duan spoke in an icy voice:

"Lord Jiraiya, it's not that easy to fool a Medical Ninja. Just now, for the sake of your life, I didn't make you summon a toad while you were gravely ill. But now that you've been treated, it's time for you to summon a toad for me!"

Although Zhou Duan had warned Jiraiya, this shameless guy showed no reaction. Not only that, his body stopped trembling, and even his heartbeat returned to a steady rhythm.

Seeing this, Zhou Duan's gaze grew even colder. He reached into his pocket and pulled out a scalpel:

"It seems Lord Jiraiya won't be waking up anytime soon. But summoning a toad is still easy—it seems you just need to press your hand on a flat surface. As for the summoner's blood..."

The scalpel twirled in Zhou Duan's hand before slashing straight toward Jiraiya's crotch:

"There's plenty of blood in this spot!"

"Please, forgive me!"

Jiraiya, "just" waking up, clasped his hands together and tightly grabbed Zhou Duan's wrists. Ignoring the intense pain in his body and the trembling in his lower half, he quickly said:

"It's just summoning a toad, Zhou Duan. You don't need to go this far. I'll summon one for you right now!"

As it turned out, Jiraiya truly lived up to being a powerful elite Jonin. Even severely injured, with ample chakra, he managed to summon a toad the size of a rice pot. And it was clear Jiraiya was well-regarded at Mount Myōboku. The moment the toad saw Jiraiya wrapped up like a mummy, it immediately asked with concern:

"Jiraiya, are you alright? Who could have beaten you like this? I'll get revenge for you. What do you need me to do?"

"Revenge isn't necessary... But there is one thing I need your help with..."

Jiraiya said bitterly, pointing behind the toad. The moment the toad turned its head, it immediately leaped up, its already huge eyes nearly popping out of their sockets:

"Damn it, Zhou Duan, you demon! You drew blood from my uncle, peeled a piece of skin off my father, and even stuck your hand into my master's mouth to collect stomach acid! And you even, even... Damn it, why are you here, you scumbag? Oh, no, don't tell me..."

The toad looked miserably at Jiraiya:

"Jiraiya, don't tell me you've made another deal with this little demon... AHHHH!!!!!"

A scalpel sliced a piece of meat off the toad's leg, followed by a dizzyingly fast bandaging. Only after the bandaging was done did the toad let out an earth-shattering scream!

"Alright, alright, stop screaming!"

Zhou Duan weighed the strip of meat in his hand:

"It's just a piece of meat the size of a thumb. With my medicine and bandaging, you won't even have a scar. In the half-month we've been in contact, you should have confidence in my Medical Ninjutsu. Otherwise..."

Zhou Duan looked at the tearful toad and flashed a "friendly" smile:

"I wouldn't have the face to keep collecting materials from you all in the future!"