Ponies come and go, right?
Some ponies are easy to forget. Those ponies have barely taken a part in our hearts, and so did we to theirs, so it's not really that big of a deal to forget them when they're gone, right?
But, what of those ponies who were a part of your life, and who took a lot of space in your heart? C-can we forget them so easily?

They said we needed to move on, but...how...?

Inspired by the song ‘Shadow’ by Sam Tsui.