Since only 4 episodes have been released I can't say much about it yet other than the fact that this anime is ridiculous but may end up being really great.
Music: 9/10
The opening and ending are really beautiful and catchy too. The ending theme is performed by "the peggies" who also did the Bunny Girl Senpai opening theme.
Art: 9/10
By "art" I consider animation as well and this series had animation that reminds me of Kill la Kill (i.e hyperbolized, flashy and over the top) so it really fits the seemingly ridiculous stuff that happens in the show.
I said seemingly ridiculous because most of these things aren't that weird because they were taken from ancient Japanese mythology of the creature called the "kappa" and once you learn aboout that it isn't that bad. I genuinely would recommend this anime to others and I hope it bacomes more popular and gets a higher score than what it has now. I also love that this anime is so non chalant with all the gay stuff they put in and they treat it like it's normal; how it's supposed to be treated.
BTW: After watching the second episode, wait till the ending theme finishes and watch what happens next...