This is actually a redraw of a 2013 picture by the same artist. You can see the original version in the source; it's kinda neat to see how their style changed over the years.
Also I know very little about Aikatsu but I really like the combination of vampire + twin drills + handholding here.
This seems like a fun fic/doujin idea - both goddess!Madoka and devil!Homura somehow travel all the way back in time to before Homura contracted with Kyubey and meet each others' past selves. Godoka's trying to be all kind and supportive while Homucifer (I'm sorry I forgot what her nickname is) is just unrelentlessly horny.