Biased off of Steins;Gate. Okabe and kurisu were attempting to set up a remote time travel device but when the machine went back in time, the world line shifted dramatically. Now what used to be Earth has been turned into Equestria. Being the only one that can notice the difference Okabe now has to decide which world he prefers. (Story line is present tense)

Character names for those who haven't seen Steins;Gate.

-Okabe rintarou, Okarin, or Huouin kyouma.
-Mayuri, or Mayushi
-Daru, or Hakah.
-Makise Kurisu, aka Cristina, or assistant.