Pinkie Pie seems like the most happy pony in the world, and makes those around her feel like thay are, but she has been keeping a secret for her entire life, not even Maude knows it. Now, a certian reserve wonderbolt hears crying when she flies past sugarcube corners, and learns a darker secret than Sombra's childhood or Queen Chrysalis's creation. More suprisingly, Pinkie is the one with this problem. I woild have guessed maybe Rarity