(I wanted to do a Jekyll and Hyde sort of thing with these two. I found it quite a fun idea. Reed since someone did it without permission, incomplete and wrong versions.)
If I were to take a wild guess as to what this is, i’d say it’s from a fanfic where some pony took a Jekyll-&-Hyde potion to allow their darker side to come out and caused the pony to split into two separate individuals…and that’s how Athena and Lustrous came to be.
I dunno who ed this, but it seems that the thing is incomplete. I’ll be ing the fixed versions tonight.
https://youtu.be/uOHK-6ij7Yk