Explanation since I don’t think many of you heard of the franchise:
In a world where the children of fairy tale characters must repeat the lives of their predecessor, Raven Queen, daughter of the evil queen in the Snow White story, opposes tradition by not wanting to be evil. The daughter of Snow White, Apple, wants her to do so so she herself can fulfill her destiny and live happily ever after.

I find the relationship between the two very unique, in that they have opposing ideals yet are still good friends. The fact that Apple wants Raven to be mean and and try to poison her, made it seem that Apple’s a masochist, thus leading to this comic.
It’s also based on how people ship these two together. I rarely support a non-canon ship, but the joke was too good to pass up.