Proofreader: M_W Miss Fierce

Everyone can't help staring at the delighted Eugine with a surprised look on their faces. It was out of their expectations that he would suddenly react in such a way.

"Alchemist Eugine?" Ash called out. She wanted to know whether Eugine's reaction meant that she had passed or not.

Eugine quickly fixed himself after hearing Ash calling him. He then explained, "Sorry about that. I just realized something very important."

"Anyways, Miss Ash, congratulations, you are now officially a Novice Alchemist." Eugine said as he waved his hand, taking out a white-colored robe and giving it to Ash. He then added, "This large Sleeping Potion you have concocted went beyond the normal large Sleeping Potion. We could even say that this belongs to a new category."

"Unfortunately, I don't have any lotuses with me right now. So, if you don't mind, how about all of you come along with me to my small Alchemist Laboratory?" Eugine looked at Leo.

"Okay!" Leo agreed. He could use this opportunity to further establish a relationship with Eugine.

"Let's go," Eugine smiled before leading everyone towards his small Alchemist Laboratory.

After a few minutes of walking, everyone finally arrived at Eugine's Alchemist Laboratory.

"You can freely observe around, but don't touch anything. I have this habit of just randomly putting things anywhere, so you might accidentally touch something that can blow up this entire Alchemist Laboratory." Eugine quickly reminded everyone before he walked straight towards a cabinet located at the edge of his Alchemist Laboratory.

Leo and everyone nodded their heads in response as they soon after began looking around Eugine's Alchemist Laboratory. All of them are really curious to know just what kind of items they could find inside an Alchemist Laboratory.

As soon as they stepped inside the Alchemist Laboratory, what attracted Leo the most were the Alchemist tools on top of the table. There were glass vials put inside a vial rack, some were empty while a few had unknown liquid inside, a cage that has a rat inside, some documents for recoding something, and a cauldron. He thought, "It seems like Alchemist Eugine was doing some experiment a while ago."

Since Eugine had already given them permission to tour his Alchemist Laboratory, Leo didn't hesitate to walk towards that table.

Arriving in front, Leo turned his head to look at the documents.

"Invisibility Potion..."

Leo silently whispered as he looked at the introduction and began reading the words.

The introduction of the Invisibility Potion was made up of thousands of words. But to sum it all up, this Invisibility Potion could basically turn a person invisible. The person's body and also their presence would become undetected by anyone around them.

"What you have read right now is nothing but just a mere theory," Eugine said behind Leo. He continued, "I've been trying to create an Invisibility Potion for decades now. But, I've only achieved a small success until today."

"If we are talking about invisibility, there already exist a few items that could grant one invisibility, right?" Leo asked.

"Yes, you are correct. There indeed already exist a few items that can grant a person invisibility, or even something just similar to invisibility. Such an example of that is the Cloaking Potion of the Alchemist which could decrease the presence of a person to the point that they can become unnoticed, and the Invisibility Cloak of the Tailors, which can make the wearer blend in with their surroundings." Eugine nodded his head to express his agreement with what Leo had said. But he soon continued, "But, those kinds of items aren't really what you can call as invisibility."

"What do you mean?" Leo quickly asked as he wanted to know what Eugine exactly meant.

"The Cloaking Potion would still show the person's body, hence the person is technically not yet invisible. On the other hand, Invisibility Cloak only allows its wearer to blend in with the surrounding, still not similar to invisibility. As for the other so-called Invisibility items, they are still similar to those two as they don't really make the person invisible, but rather just allowed the one that used them to either trick the people's eyes or their senses."

"None of those so-called Invisibility items can really make a person turn invisible."

"However, this Invisibility Potion would be able to achieve that. Why? Because it has something that the so-called Invisibility items don't, excluding the Cloaking Potion, and that is its effect would be in the inside of the body, not the outside. This is the advantage of Alchemist Products that other Craftsman Association doesn't have."

After saying that, Eugine suddenly shook his head and said, "Unfortunately, the majority of the Alchemist had already given up in creating the Invisibility Potion, and created the Cloaking Potion instead."

"I understand how you feel, Alchemist Eugine. But, you see, even if those so-called Invisibility items don't really make a person invisible, it still can't deny the fact that they had indeed achieved their respective goals. How about you, Alchemist Eugine, what is your goal of making the Invisibility Potion?" Leo paused to ask. He continued, "To be more precise, aside from having the effect of those so-called Invisibility items, what else could it have?"

Hearing Leo's question, Eugine can't help himself from chuckling as he didn't expect to meet such an interesting person like Leo. Indeed, those so-called Invisibility items had achieved their respective goals of making one be able to hide from the others. But they have missed something...

"Very simple, Mister Loki," Eugine said with a smile on his face. He took one vial of his unfinished Invisibility Potion and took out the Alchemist Rat inside the cage before making it drink the potion, "Look closely..."

Whoooosh!

Just like the effect the last time, the Alchemist Rat's lower body slowly turned invisible. Then, after turning half of its body invisible in just ten or so seconds, it stopped and eventually returned back to normal after a few minutes.

"How?" Leo exclaimed in surprise.

"You understand, right?" Eugine asked.

"Yes..." Leo nodded his head with difficulty as he was having trouble believing what he had just seen just now.

The part of the Alchemist Rat's lower body turning invisible wasn't surprising, as it's just the same as the so-called Invisibility items that they were talking about a while ago.

The shocking part is, this Invisibility Potion actually made that invisible part of the Alchemist Rat completely disappear. As in that part of the body that had turned invisible, had as if disappeared without any traces left.

No body. No shadows. No presence.

Nothing at all!

As in completely, there is not a single trace left!

It's like the part that had turned invisible has never existed in the body of the Alchemist Rat.

There was not a single thing that tricks the eyes, the senses, blending in the surrounding, or was there even any external aids like wearing armor or cloak to disappear.

"Will it still be possible to detect someone once they have turned invisible?" Leo quickly asked.

"A friend of mine had passed by the Emerald Tree Kingdom a month ago. He is a peak 9th Galaxy Mage from the Human race. After showing to him the effect of the Invisibility Potion and letting him try to detect the presence of that part that had disappeared, he said that no matter what he does he was still unable to detect it. It's like that invisible part has completely disappeared from the Celestial World." Eugine replied excitement and impatience were evident in his voice.

"It's really unfortunate that..." Eugine shook his head helplessly, "The Invisibility Potion still lacks something to make it powerful to the point that it can cover the entire body and can last for a long time."

The Invisibility Potion has only covered half of the Alchemist Rat's body and has only lasted for a few minutes. Such a thing is really not enough. For Eugine, the goal is to make the entire body invisible and make the time of its effect last for an hour, or best, a day.

Hearing Eugine's reply, Leo can't help becoming excited.

The so-called Invisibility items will never be able to compare to the effect of the Invisibility Potion. The former can still be detected as long as one is strong enough. It would even lose its effect when used against someone with a strong detection ability, no matter the cultivation. But the latter, basing on what Eugine had said, was undetectable as if it has completely disappeared from the Celestial World.

Stealing? Assassinating? Scouting? Hiding?

Whatever it is, as long as it required a person to not get detected, give them the Invisibility Potion and they will be able to achieve that.

What's even more important is, this is just the effect of an unfinished Invisibility Potion used to a No Star Magical Beast. Once it's complete and given to someone with higher cultivation, considering that person has a powerful hiding capability as well, then it might just be possible to hide against a Constellation level Mage or higher.

This simply means that whoever uses an Invisibility Potion could roam around almost all of the territory in the Celestial World and do whatever they want without anyone being able to detect them.

Of course, describing it as such is really exaggerated, since a higher mountain always exists and there are a lot of unknown variables, especially in the Celestial World. But, even if the Invisibility Potion could only have half of the effect he had mentioned, it would still be a very powerful item.