A quick one-shot that might turn into a series later.

Enjoy! I don't own -Man.

It began after I used the Ark. The shadows. Were. Breathing.

No, they weren't just breathing. They were watching me, too.

The first time I saw the eyes, I screamed. I was so scared of them, blood red and watching, that I could stifle the noise coming from my throat. When Link barged in and questioned me, I told him I must of imagined it, that I was only tired and there was nothing wrong. Only I was tired. I can't sleep.

Its watching me and I can't sleep. Always watching and waiting, but for what I can't figure out.

It must hate me though. I feel the animosity toward me like fire, burning holes into me. I need to stay away from it. But, it's everywhere! I can't hide from it. It wants me dead.

I saw its face. I saw its face! It. Looks. Like. Me.

I don't understand why it looks like me, but I don't like it. I try not to react to it, as my day goes on it follows me around, but seeing it in every mirror, crack, crevice, and shadow terrifies me even more. And everyone is starting to notice.

Lenalee is worried about me, Link is cautious around me, Komui tries to help but can't, Lavi is held up in the library, and Kanda doesn't seem to care. Why can't they see it? It's right there, following me around like a shadow. And they still can't see it! Why? Why is it tormenting me!?

It spoke and...it sounds like me. Why? Why are you like me?! Leave me alone! NOW!

I...I'm scared. It's dark and it is coming... No... It's going to kill me.

Please. I have to live on... For everyone.

I do not hate you. I'm alone. Loneliness hurts. I want someone to talk to me.

Please. I want someone to live for... Anyone.

A month passed and Allen seemed completely fine. He ate like usual, trained like usual, and even did paperwork with Link. As time passed, everyone forgot about how Allen had been so scared, even of his own shadow. Allen, however, was not the same. His shadow was different. Some people even described how they felt the shadow look at them.

That is what they are. Othersiders are shadows that slip through the cracks in reality, someone who is you but not. In fact, Allen has met not only his own Othersider, but Kanda's, Lavi's, Lenalee's -before it was ripped to shreds-, and Komui's. His dark copy smiled a shark-toothed grin at him, before slipping away through the glass of the mirror. And Allen was still scared. Because it wanted to kill him.

And it would. But, not if he killed it first.