You're probably wondering about the title of this story, right? Well, it's true. I am Slenderman's older and only sister.
I am the oldest of the Slendie siblings, but not many know about me. And that is because of our parents.
They feared that if anyone knew that their eldest child was a girl, they'd be looked down upon. So I was kept hidden, training to survive and protect my family if needed.
You see, I am the most humanoid of my siblings. I'm also the strongest, and most powerful. So I was my parent's safeguard if anything were to happen.
I mean I didn't mind, I just wish I had a little more freedom.
Like my brother's, I am an Operator and have multiple proxies under my sleeve.
You could probably guess that I was pretty lonely all by myself. And I was, my parents never really cared about me. All they cared about was keeping me under their control.
But as I grow, so did my powers, and I was able to overthrow my parents. I fled with my proxies and found my own place.
I built my house from the ground up and made known my territory. My little brothers never bothered me so I never bothered them. But every now and again Splendie would drop by to see how I'm doing.
Slender was living pretty well off as well and would sometimes send a letter to update me on the family business, etc.
But of course, my peaceful days didn't last forever and I received some information on an old enemy...