This story passes before "Season 3 Finale: Magical Mystery Cure" by Lauren Faust. I just did this because I don't know if Twilight became immortal or not.

A century have passed after the deaths of the Elements of Harmony, Spike is left to wonder what remains for him and what friendship meant.

Cover art by MrDaviez on DeviantArt, used without permission, if the author wants me to remove it, just say it.