Love the pixel art! I really like how almost everything in the game is in the form of pixel art. It's very beautiful. Regarding the game itself, at first, I was complaining that the front tree and bush silhouettes are obstructing my vision, but then again I think it's a nice addition to increasing the game challenge. I'm not sure how to properly use both Yuuka's modes (the big one and the small one) so I ended up just using one mode almost all the time. I also realize that if you change direction rapidly when walking on the soul, you can gain a lot of souls. Pretty sure that one is a bug.
I streamed the game here around minute 42 in case anyone is interested in watching it.