Years ago, in a fandom much younger than our current one, a story appeared about a kid named
Grayson that was bullied at school for having a Rainbow Dash backpack. Fast forward to 2016, and a Spanish theater group has scooped up the story for a stage based performance.
The actual play happens from the 17th of August all the way to October 16th. For tickets, hit up
this page.
I've dropped the Google Translate version of their synopsis below for convenience.