This story is a sequel to Sunset Shimmer Lends Pinkie Pie the Wrong Thumb Drive

Sunset Shimmer visits the Castle of Friendship, and inadvertently discovers something that Twilight would normally keep hidden under her bed... except that since this is a pony princess we're talking about, it's obviously nothing remotely resembling normal.

Rated Teen and Sex for discussions of pornography and self-love.

One day, Twilight Sparkle discovers something amazing about her friend Sunset Shimmer.

She's a magical talking pony!

This requires investigation! Science! Possibly a full-body physical!

Or maybe Twilight will just ask her what's up with that.

Rated Teen for frank discussions about... y'know.