Overall: I'm not sure this is a real show that I watched
I'm not entirely sure what happened in Kiva. Well, I know that Toshiki Inoue happened. This is what we get when we put Toshiki Inoue in charge of anything. The plot makes more sense than 555 but it's still a pretty loose plot for the entire show. We're mostly here to watch Wataru grow and to suffer under Otoya.
I am now stuck considering if Toshiki Inoue is the modern Shakespeare. Just in terms of his comedies. I think that's where he is spiritually.
Overall: Maybe don't spring into Kiva if you haven't experienced an Inoue work before. Unless you really like bullcrap. Once you're emotionally ready for Toshiki Inoue; this is the show you watch.
List of Series
Lupinranger vs Patoranger