This was a very cute and somber experience, a lot of people have already mentioned it but the art and the expressions especially are very charming, and the designs for all of the overlords work well for them, I think. I ended up going with FIlia, and part of me was waiting for the other shoe to drop, lol.
I had a fun time playing this!! Only thing is that the CG for the medusa ending didn't work for me, it said it couldn't find the image. Maybe it's a bug.