Ponyville's newest psychotherapist realizes she'll have her work cut out for her when her first patient in town is a unicorn colt who claims to have been originally a "human". He's surprisingly cooperative, even with his delusion, but his lack of parents or guardians makes things a bit more complicated.
This story will be using a pair of odd stylistic conceits: being done entirely or almost entirely in an epistolary style, and, despite being an HiE story, being told almost entirely from the perspective of other ponies around said human.
Also, many thanks to Oh to be Old Again for giving the initial inspiration for this story.