My name, is Nuruth Uavoo.
My story, is wholly unremarkable.
My planet, is not this one.
My dream, is to return.

I'd start from the beginning, but I don't think that's the best idea. Instead, I'll start before that.
My planet is called Arnool (the inflection is on the first syllable, a mistake a lot of people make). It is home to a wide variety of plants and animals, and two sentient species. Mine is the Treeper, a species that most commonly have three legs. Our genes work in a similar way to that of humans: we have differences in color and mutations involving limbs.
By default, Treepers are green, due to their ability of both photosynthesis and metabolism. However, some mutations result in losing the ability to photosynthesize, as well as losing a leg. These are treated similarly to mental diseases are on Earth; debilitating, but not completely destructive. However, these mutations were not found to be coexistent...until me.
When I was conceived, the doctors proclaimed how much I looked like a Human. Scientists on my planet had been wishing to learn about regular life on planet Earth, but were only able to do it from afar. With me, they would be able to study life from a human's perspective. They gave me an implant, a neurotransmitter, if you will. It reads my brain and sends signals away, on wavelengths that they knew humans wouldn't be able to read. Then, they put me in an interstellar freezer, blasted me into space, and applauded themselves.
In several million years, I would be injected into a human womb, allowing me to live a real, whole life on Earth. My selected mother had many a miscarriadge, and I was her saving grace. Later, she proved her fertility with a second child, which may have just sealed my fate. I was then, a human.
At the age of three, I was diagnosed with attention deficit disorder, or ADD, a problem among humans that shortens their attention span. It was still under the assumption that I was a human. This kind of thing is prominent among Treepers; it helps us survive among the carnivorous foliage.
At 8, I began having what I dismissed as daydreams about Arnool. I pictured squirrels with retractable fur, trees ten feet wide, mobile blobs of carnivorous goo, and enormous snakes with a taste for blood. I always thought of it as imagination, but mine doesn't seem to want to work very well. So now, I believe it. I believe that I am not from here. My parents blame my disposition on my disorder, but I know better.
And who knows? Maybe I do have psychic powers, but that's not why I'm here. I am here because it is the only place on Earth I feel I belong. Among those I know are not accepted freely into society, who need to hide who they really are to avoid confrontation. And the only place I feel comfortable revealing my true self, rather than pretending.

I have never heard my native language, but it is engrained in my subconcious.

If the scientists can see this, I have one thing to say.
Cvorg ni cedp. O en fu murimw.