Description:
From Arc 3: https://www.fimfiction.net/story/547188/full-friendships-magic-3-the-inner-monster
Arc 2: https://www.fimfiction.net/story/546945/full-friendships-magic-2-a-pies-white-lie
Arc 1: https://www.fimfiction.net/story/283720/full-friendships-magic-1-the-filly-from-mitaly
Blog post: https://www.fimfiction.net/blog/1037000/full-friendships-magic-3rd-arc-is-up