I still feel that they could've done it better without time traveling crap.. What part of it does it belong in Kiva? And whatever happened to the damn horror theme? At least Den-O and Kabuto has a reason behind the time traveling thing. For Kiva... No. It was random. Out of place. "Oh hey, did I mention that the dragon castle thing also happens to have the door that lets you travel in TIME?" BULL CRAP! We don't need Nago's pointless trip to the past to find out who Wataru's mother is. We would've figured it out even before they outwardly reveal it. Okay, I'm done complaining about this.
In retrospect, Kiva has an interesting concept but they fail to orchestrate it properly...