The queen really makes the most out of the few appearances she has in this manga. It's a good thing the king has such a sensible woman by his side, he seems like a decent enough man, but his egotistical side needs to be kept in check.
I wouldn't be surprised if probably-fake Rio turned out to be some sort of magical plant that was grown to mimic him, and that's why he needs so much water. If only Pai'yan didn't go into overprotective mode, the mystery might have been cleared up sooner.
Thank you for the new chapter!