Ever since acquiring the geodes and the knowledge of the power of Equestrian magic, Rarity's life has been thrown into a new gear, for better or for worse. With the support of her friends, she has made the most of it, pursuing her dream of entering the fashion world and starting her own business, in no small part due to her powers. Between opening a shop in the city and occasionally doing her bit to save the world, she's kept busy. With the assistance of understanding, tight-knit friends, though, she has nothing to worry about.

Nothing except her sister.

Sweetie Belle, once a sweet, demure, and naive girl-next-door, has changed since her young teenage years, and there's seemingly nothing that can be done to rein her in. Drinking at all hours, inviting friends and strangers over to party - and worse - and disappearing to goodness-knows-where, she has become a thorn in the side for the budding fashionista. As the days wear on and the tension mounts, Rarity decides to address the matter head-on, and resolve it once and for all. Is there a way to broker peace, or is their relationship dead and buried?

Or is there something else, something she never considered, behind all of this?

An entry for the First Time February contest. C/W for incest. Cover art by Emerald Flight on Derpibooru.