Well that's very cute. Naturally i love the little models and the screen effects to make it rosy and relaxing (but maybe a biiit too much bloom). I'll make this comment based on the new version since obviously the change was to the barfy controls, but I gotta rate based on the original submission. Anyway, this was a much more peaceful game to play, and for what the game is I like it, and I like the fact that dying didn't have big penalties, it's much more exploration-based.
But as far as nitpicks go I have a couple. For the level design, I do really like a lot of the segments, particularly that one where you had to go under the moving platform at its peak to reach that one big island (but idk why it wasn't consistently happening for me), but I felt a lot of it just wanted me to wait around. A pinch less of Moving Platform Syndrome would have made some parts less repetitive. The first level was also one of my least favorites and got me worried they'd all be kind of obtuse, but thankfully it was an outlier. I wasn't a huge fan of having to observe a little divot in the first area, especially when it seems like that higher platform is where the player would logically learn to jump or similar, since there's something right behind it. I hate to be that picky about it but it felt a bit like an anti-tutorial.
Also Yuyuko and Youmu didn't really feel like they had a distinction besides Youmu being a worse version of Yuyu (also her dash had too long a recharge time) in terms of what general movement you can accomplish. I feel like one of them should have had more verticality to create a different playstyle. It might also have been neat to be able to switch between them to choose how you want to tackle a level, instead of having it be predetermined, but that comes with its own design challenges as well.
Anyway, I liked the tranquility and exploration behind the core gameplay a lot, and at no point did I not want to press on, so this game is a good addition to the world.
But please do the thing I referred to in my other comment with your game files.