"Number 1, come here."

These words were like a death sentence to the terror-stricken slave. She fought against her own body, trying to run away, but she could do naught against the slave collar. What a sad story, but that's life.

Currently, I was locked up in my room that had essentially turned into a pseudo-primitive laboratory. It couldn't even compare to the most basic of basic labs in my old world, but what could I do with nothing but my own two hands and some gold? Not much, would be the correct answer.

I wasn't the only one buying slaves with the money the king gave us. The girls bought dresses and souvenirs, tipical of brain dead teenagers, whilst the vegetable bought a tigerkin lady, an elven flat-chested brat and a silver-haired human. It really impresses me how much a teenager's hormones can mess up your brain. Not only did those three slaves each cost as much as all my slaves together, their usefullness is limited. 

But, oh well, I'm just a scientist with a slight case of thanatophobia, how would I ever be allowed to judge others? Well, others that aren't puppets under my feet, of course.

As subject one came up to the operation table, I 'gently' laid her down and shackled all of her limbs to the table, forming an X with her limbs. 

"Very well. You four, go to that corner, and do not scream nor make any noise that could alert others of my operation. That is an absolute order."

The moment I said that, each of their collars shone a bit before calming down. If they dared to do anything, they'd die immediately. Only if their stats were ten times mine would they be able to escape, and fortunately, they aren't quite at that point.

Focusing on my test subject, I slowly put my hands on her. One on her navel and the other slightly above her breasts and under her neck. She was naked, of course, but I doubt she cared right now.

Silently whispering under my breath, I activated my skill. "Eat and grow, grow and strenghten, strenghten and reach eternity. Let my road to immortality begin: Gluttony!"

At first, nothing happend, however, after around twenty seconds a black slime-like substance began seeping out of my arms and stabbing into the girl, whom tried to scream but was prevented by my precautions and the collar. 

The Black Acid, as I chose to call it, slowly ate away at her, leaving hollow bones behind. It took a whopping thirty minutes for the whole 'operation' to finish, and by then, I felt full. It was a strange feeling, like I could burst at any second. Naturally, I had an idea of why this was and what to do. 

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After burning the skeleton in the fire pit, I sat down and began meditating. Inside of me, a large pool of energy was settled in my stomach. It wasn't exactly 'energy', or 'mana', as the  natives called the strange law-breaking energy that existed in this world.

No, this felt more like... Life energy? The thing that allows us to live? It sounds stupid, but that was the feeling it gave me. And yet, this life energy radiated a huge 'death energy'. Although these are cliche names, they describe the feeling it gave off quite well.

Still, the knowledge from my innate skill wasn't for naught. I began directing this energy all around my body, letting it settle in and nourish me. It wasn't a huge boost, but it was still quite large considering the girl had a huge 3 in strenght, 2 constitution and 3 dexterity. That's almost three times my stats, which means I should hopefully get something good out of this.

A couple hours later, I finally finished, feeling indeed much stronger then I ever did. It felt as thought I could rend steel and shatter stone, which I tested, and I definetly couldn't. Well, my bones didn't break though, so that's a start.

It felt intoxicating. I never did drugs, but I knew some who did, and this feeling is probably the same. I felt a primal desire to repeat this operation.

I looked at the remaining four slaves with a borderline insane look. Strangely enough, the feeling of fullness I felt before was gone, and in it's stead, hunger reigned.

[Warning! Gluttony's Corruption has reached 0.23%!]

A small warning appeared, but I ignored it. To reach immortality, I'd sacrifice my own flesh and soul, no matter what I have to do or how I do it.

Although I wanted to once again devour the remaining slaves, I restrained myself, as I had other things that I need to test first.

"Number 2, come." I sternly said, ignoring the look of horror on his face. This guy had an amazing 4 for constitution, and 3 for strenght, but lacked in everything else. 

After he too was laid on the testing table, I began my smaller experiments.

Turns out, I can manipulate the Black Acid to a small extent, but I can improve that. At first, I could only allow it to do as it willed, but slowly, the acid became easier and easier to use. Not by much, mind you, but still easier. 

With it, I first tried to only eat parts of him. His left arm was my first test subject, and needless to say, only bones remained. After a while of playing around with it, I decided to finish this once and for all.

Lowering my face down to his own, I murmured "Do not resist, that is a command." 

Then, I bit down on his neck. I had to grind for quite a while, since his constitution wasn't for naught. Still, I managed to force my way past his defenses and then tried the second method.

Instead of using my Black Acid, I directly sucked his life energy, kind of like a vampire, but instead of blood I sucked his life.

It was a lot less efficient then using the other method, but it was quicker. In just a couple minutes, the man's eyes had lost all life and his skin had dried up. He looked like a corpse, if not worst.

After using the energy the man gave me, which was much less then the woman's despite him being stronger, I glanced at the sun outside. It was already bordering the horizon, so I had to finish quickly, as the king wanted us to meet up with the nobles and showcase ourselves. 

Turning towards the remaining three girls. Although I am no sadist, I couldn't help but grin as I commented "Since I'm in a happy mood, allow me to enjoy myself on you, will you? Oh, sorry, forgot that you have no choice. That's an order."