Change one thing, and you change everything. That's the basis for what is called chaos theory or the butterfly effect, and if something as small as a butterfly flapping its wings can change the world, then what would happen if Emiya Shirou's childhood was spent living on the run from Magi before the boy found his way into the Underground? Interesting is at least a given.
Rated: T - English - Adventure/Friendship - Chapters: 1 - Words: 3,719 - Reviews: 14 - Favs: 55 - Follows: 58 - Published: 12/17/2016 - Shirō E., Kiritsugu E., Toriel