The idea of Yuuka growing flower fairies was a lot of fun, and it fit naturally with the game concept!
The game did suffer from some readability issues. Yellow text on green can be difficult for some people to look at. When colors don't contrast much from their background, a black or white outline usually works well.
Additionally, the camera made it tricky to handle some parts, especially the boss. Controls to manage the camera may be nice, such as arrow keys.
The music was very pleasant to listen to, and I can see that a lot of work was put into the visual style!
Overall, I enjoyed playing through this one!