This was very enjoyable, however I am nitpicking so I give you a 9.9999/10

Ho. Ly. Fuck.
Futa? Check.
Horsecock(!) futa? Check.
Horsecock on human female?!? Check!
Horsecock on human female anal!
HO-SWEETLUNA-LY YES I NEED THIS.
What a lovely grouping of fetishs. I suddenly desire more of this.
(Great 'effing work!)

6785747 Ah, a pleasure to be of service to those in need of something that goes a little like this~!

Loved it! And boy was I surprised and pleased to find them going straight to anal! Heh, sorry, just a big kink of mine. Also, I really liked how sweet and trusting both Sunset and Twilight were with each other. So overall, really sweet and very hot! Thanks for writing and sharing this, and have a happy new year! :D

... Um... More?

6785891
Yeah, which makes me surprised with its low view count.

6799090 Ah, but to me, I value them all!

I enjoyed the scene overall but I have some nitpicks over how you worded things.
First, Twilight wakes up at 8:42 and we're told that's early; then she looks at the calendar to see it's Saturday and therefore not late to school. These are contradicting ideas. To say 'It is only 8:42' implies she has time, and it's immediately followed up with terror.
And at the beginning everything was "lovely". Where pancakes, bacon, and sausage each got 2 adjectives to describe their greatness, the waffles were apparently bland (and weren't they french toast just a minute earlier?) and grouped with cereal.
The dialogue was a tad thick for my tastes - too wordy and clunky for the sake of clearness to the reader left it inorganic feeling (but I did enjoy their teasing each other).
Points for consistence and making a vivid scene. I do like the details you included.
A quick read-through would do wonders: "Sunset’s blush balls slapping against Twilight’s read" indeed. Also "five friend's" should be "five friends" and "her's" (in "everything in it was her’s") should be "hers"

I really liked the affection and trust, there. It definitely felt like love with the making love; almost like a clop-based signifier of Sunset's character growth. Mix that in with VERY good show not tell of a well developed, comfortable relationship, and it becomes very believable that the shyer human Twi could be ready for this. Huzzah!