Sudden Transdimensional Uncontrolled Polymorph Induced Deficiency Syndrome - "With the Sirens dealt with and no pressing time limit to return to her world now that she can come and go at will, Twilight spends some time catching up with Sunset Shimmer. She asks a question that has been on her mind for a while now. Namely, how Sunset ever thought invading Equestria with a few hundred zombified high school students was a remotely workable plan."
Don't Boop The Pony - "They came suddenly and without warning. They wanted us to boop them. We must resist."
Sunset Shimmer Versus - "Sunset Shimmer has a pretty good life. She has good friends, a nice apartment, she's back in the good graces of most of the student body at Canterlot High, and she has a hotline to the Princess of Friendship back in Equestria.
But Sunset Shimmer has always had a temper. And there are so, so many things that annoy her.
Like FedEx. And crabs. But she's already dealt with those things.
Lately, a lot of the human world's little annoyances, oddities, and even things that have somehow popped up that shouldn't even exist are getting under Sunset's skin.
And she's had enough.
It's time to fight back."
But Sunset Shimmer has always had a temper. And there are so, so many things that annoy her.
Like FedEx. And crabs. But she's already dealt with those things.
Lately, a lot of the human world's little annoyances, oddities, and even things that have somehow popped up that shouldn't even exist are getting under Sunset's skin.
And she's had enough.
It's time to fight back."
Edit: Not all that comfortable with chapter 4, but Chapter 1 and 2 remain something I would read. Mostly to remind myself that, yes, there can be days worse than mine.
I've already run across two other stories where Zephyr is almost, if not more, unbearable and borderline irredeemable than the character was in the show.
Almost all of the authors that I've seen use him tend to make him the sort to Omega Level Scum-Sucking Douchebag that makes everyone physically ill.
Personally, I think he was more of just an asshole who ignored boundaries and would play off others as hard to get and, right about now, I think I see where the omega-level scumbag characterization came from. Seriously, he's like a nasty mix of Ataru Moroboshi-level useless, Kazuharu Fukuyama-level disregard for boundaries and manages to make the Witch of The Waste from Howl's Moving Castle seem like a bit of a charmer.
Maybe it's because he was a pony in a G-rated series, he wasn't allowed to cross the lines who have characterized him would easily see him rocketing past if he weren't held back by something like TV censorship ratings.
More to the point, I'm surprised no one has made any "Never Seen Nor Heard From Again" scenarios involving him being only referenced as "absent".
But the year is still young and I'm not sure how many people could bear to watch that episode.