"I've got a new job for you. Tomorrow 3 pm,  in the alleyway behind the Moulin Rouge." I nodded at the small man sitting next to me. Both our feet dangled off the edge of the tall building. Cars, flying taxi's, people, they all moved around, all living their normal lives oblivious to us sitting up high, watching them all.
"Don't be late." I signed [Fuck you] back to him and he just flashed me a crooked smile, showing his rotten teeth before he got up and left me by myself. I never showed up late. I stared at the lights beneath me, the flashing neon signs, the commercial screens, and people's hologram devices. I liked being up here, sitting at the edge of my world, not being a part of whatever was going on down there. 

A beeping sound took me back to reality. I reached to my holo, a black bracelet, and turned it on. I hate these things, I hate technology but unfortunately, I can't live without the holo.
As I opened the message, the text came out, projected into the air. It was time to move. I quickly closed the holo and pushed myself off the roof. The sound of the cable running through my belt, the wind in my hair, the ultimate freedom even though it usually lasts only a very short moment. Midair, I turned around so I was facing up to the sky and hit the brake so I would slow down. As planned I silently landed on to the balcony ten stories below where I had been sitting. With one press of the button, the cable released me and I opened the balcony door and stepped inside the giant hotel room.

As I scanned the empty room I was cursing loudly in my head. He was supposed to be here otherwise my holo would not have gone off. My eyes traced along the expensive furniture and ended on the bottle of champagne on the desk. It was half empty. A grin appeared on my face as the door opened and a man and a young woman walked in, both carrying a glass which was almost empty. Their giggling stopped as soon as they noticed me. 

"Who the fuck are you?!" The man took a threatening step closer to me. The woman shrieked and tried to hide behind him as I unsheeted two small blades. The man looked down at my hands and hesitated, it was dawning on him, I could tell. He was starting to realize who I was. My grin grew even bigger as he glanced up at me with fear in his eyes.

"You're the demon! The black demon! Why are you here?! I did not do anything wrong." His lip started to tremble as I took one step towards them. His eyes kept flashing between my blades and my face. As I noticed the woman behind him started to shake I started to count. From the first symptoms it would only last less than a minute. 

1, 2, 3, 4, 5, 6, 7, 8, 9

I sheated my blades, knowing all too well he would not dare to attack me. 

15, 16, 17, 18 

The woman started sweating and became restless. Her eyes darting around the room. She knew something was wrong. The man just stared at me as beads of sweat started to form on his forehead. She would go first. In ten seconds.

30, 31, 32, 33, 34, 35

She fell down. Her eyes wide open, her hands clutched to her chest. The man's eyes widened as he took in the sight of her and he quickly turned back to me. There was pure terror now instead of fear. 

"How?! Why?!"

I just glanced to the bottle of champagne. His eyes followed my movement and as he looked at the bottle he clutched his heart and his breathing stopped. 

50, 51, 52, 53

With a loud thump, he collapsed. I could smell the body fluids leaving their bodies. Death was never a clean thing, but this was the cleanest it would get. I don't like leaving a mess. I prefer old school. No blood, no gore, no trace. I carefully stepped over the dead man and walked to the bottle of champagne. From my pocket, I took a small pill and crushed it on the desk before spilling the powder in the bottle. He was supposed to be alone and to have died from a heart attack, but now he was with this woman, and two people dying of a heart attack at the same time would be too suspicious. 

Always have a plan B. The first thing they taught me when I was young.

Careful not to touch anything, I stepped away again. The only thing I left behind was the wrapper of the pill. I closed the balcony door behind me, attached myself to the cable and climbed onto the railing. With another press of the button, the cable started reeling in again, lifting me up so I could run up the building back to the roof. Once I was up on the roof again I grabbed all my gear as fast as I could and put it in my backpack. Slinging it on to my back, I started running to the other side and there I grabbed hold of the slider hanging from another cable, enabling me to glide through the air from one building to the next. Again, I removed all trace of me ever being there and disappeared through the door to the service floor. Once there. I changed my outfit from a black catsuit to a very basic pair of jeans and hoodie and went another floor down to the elevator to bring me all the way back to real life. Another job done. 

They call me the black demon, the silent killer. I am an assassin, a mute and a black woman. I was born as a scientific experiment. My parents wanted to create their ultimate child and thus built me in a laboratory. They only got the best genes possible from their bodies and put them together in the mix so I would become their perfect child. As soon as I was born from the hatchery, it became clear I was a failure. I did not cry. I could not cry. I could huff air from my lungs, but I was born without vocal cords. My parents abanded me even though they could fix the problem by implanting speaking technology. They refused, as my voice would never be my own and thus I would be anything except the perfect daughter.

I was raised in an orphanage run by the same company that created me. There were many more rejects like me, and we all got the same upbringing. Our records were erased. To the outside world, we did not exist. Some perished during training and some, like me, excelled and became tools of the underworld. Tools for the rich to use. My life was never my own, but I had not known otherwise. They never bothered to fix my speech and when I was old enough, I simply refused to have it fixed. Technology created me this way and thus I decided to hate technology and everything it stands for.

My name is Subject D-047E5.