Source: Armiger is currently the shortest Source companion fic, spanning just five chapters and 19,867 words; by TheMissusD. Written much like a journal, it chronicles a series of meetings between a Windigo named Parasomnia and several high-ranking members of the Equestrian government.
I committed the one unforgivable sin.
I gave the guilty mercy instead of justice.
My name is Parasomnia. I was a Windigo.
The narrative focuses on the stark differences between pony and windigo philosophy; contrasting mortal and immortal mindsets, and following the Source universe's focus on memory and time, and the fear of losing both.