Thank you very much! I am indeed still working on this, there's a lot of potential here but also I think a lot to refine.
I've mentioned this in other comments, but you're absolutely right about the difficulty--the jump is real and also a little bit sudden. I'd like there to be a little bit more of a way to ease in players, as well as an avenue for them to change the difficulty if they'd like.
Please look forward to this being expanded later in the year, I'm polishing up the gamejam build actually right this very moment and would very much like to turn this into something bigger. And depending on how people receive the post-gamejam build, there might be more in line for Onigawara.