When she was in middle school, Sunset Shimmer suffered from what is called 'Middle-second syndrome'.
It is a term used to describe young teens who have grandiose delusions, and in some cases, have convinces themselves that they have secret powers.
She used to call herself 'The God Princess of Flames', an immortal being capable of manipulate fire, alienating herself from her classmates.
Finding her past embarrassing, Sunset will try everything to start her high school journey quietly after moving out from her city.
But not everything went as planned when she meets Twilight Sparkle, a girl in her class suffering from the very same syndrome, who calls herself 'The God Princess of Night'.
Sunset will do everything in her power to avoid being around that girl, but she will find it to be a difficult task since this girl literally lives next door.

Art Cover by @IoNaomichi on Twitter.

Chunibyo re-written as Equestria Girls with my own changes and implementations.
This is not a serious story, just writing stuff for the fun of it, don't take it too seriously.

Day one, already featured ahah, thanks guys