This story is a sequel to The masked figure: Rainbow and Sunset
This is the 3rd book of the masked figure, where Princess Twilight and Sunset keep in touch. As you can see, it is the title of a song in Descendants 2. Sunset and Rainbow Dash start at Auradon Prep and Sunset makes friends with Mal. A Mal x Ben ship and obviously, Sundash
The photo is from Sunset’s backstage pass as that is the only picture saved that has only RD and Sunset
for those who have a question about the masked figure (https://www.fimfiction.net/story/482511/the-masked-figure),
This is Sunset trying to redeem herself for her actions by letting her friends have freedom and she having more time witn Rainbow Dash.