Wonderful movement. Main thing is I just wish I could immediately run out of landing, or maintain a run if I left the ground while running. Some kind of sound effect for the midair dash/dodge would've also felt good I think.
On the topic of the midair dash, given that it works like a Rivals of Aether airdodge, it allows you to wavedash. To which I thought "of course" and laughed lol. I do love me some movement tech. I loved that you could wavedash off a ledge, immediately go into a hover and maintain the momentum from the dash during the hover. So satisfying, regardless of if it was intentional or not.
On the subject of the wavedash, since doing the dodge on the ground does not actually do anything like a dodge roll, I would've liked to see this be a macro for the wavedash. IE trying to dodge while grounded will automatically input a wavedash.
I think utilizing the theme to make a platformer where two characters work together is a great idea. I can imagine more mechanics where they actively do things in tandem to really drive it home. It's a shame there was only one mechanic where Nue is used/required. (But at least she joined in on the boss fight~) I did love the little blurbs during gameplay, though. Very cute addition. (Though for me sometimes a bit hard to read while moving.)
I adore the visuals. The music was great as well. What was there, in general, was very well executed. Granted, it was pretty clear to me the stuff that got the short end of the limited time. (Nue ;_;)
Overall, Kogasa wavedash/10, she is a menace to society.