It's beautiful and emotional, sad yet wonderful.
They say how only 10% of any fanfiction is any good. If true then I'd argue that 10% of that goes beyond simply good storytelling, and reaches you on a whole new level, that leaves such an impression you won't soon forget it.
With that we come to My Little Dashie; a story that despite what seems like a silly concept quickly shows us that whatever the situation in a story is, the writing, characterization, emotion and setting is what really matters when writing anything. Our protagonist is a lonely man leading a dull and repetitive life in a dying city, where his main activities involve working, sleeping, walking and My Little Pony Friendship Is Magic
, the big bright spark in such a grey life. It's a bit predictable but it doesn't go overboard into narm or utterly bleak. By chance, one a walk one evening he stumbles across a box which containing Rainbow Dash. She is only a filly, with no cutie mark and no idea of who she is; the protagonist, realising that there is no option, takes her in and raise her as his own child.
It's played rather realisticly, not just as a crossover fic, but as we see the evolution of this into something greater. The protagonist reacts as you would expect, unable to believe that a living, breathing Rainbow Dash is here, how did she get here, why was she abandoned? Yet good nature takes over as he decides to become a parent to her. We see this relationship evolve in snippets as you would expect a child growing up, she's curious of this alien world, learning to speak, taking her first flight, in-character moments like watching racing. All the while despite it being a human taking care of an animated pony, it feels so magical, he does his best to provide for her and to help her feel normal in this world. The length of the story is perfect for bonding with these two characters.
You probably know how it will end; having to let your child go, with Celestia and the others showing up to take her home. Yet in your heart you won't want it to end. It's amazingly moving and emotional, and so beautifully well written too. I broke down along with the cast, it tugs at the heart strings, made even sadder by the resolution, but optimistic enough for you to draw your own conclusions.
Please check it out, it's peices like this which help improve the appreciation for this wonderful show.