Author better start giving these two some actual scenes some day, so that it can make it into the anime. They're paired up in all the promotional material and art, and Aoba is the one who gets her out of her shell, but they don't interact as much as I'd like recently.
I agree it is beautiful art - but the thought keeps intruding - why the hell are 2 girls in fancy dresses kissing at the bottom of a pond!? Except for a photo shoot the only thing to make sense would be a lovers suicide - which is hardly a nice idea.