<cross-post from jul>
It doesn't exist, but...
I'll be brief. I want a Umihara Kawase level editor made really bad. All info regarding the game is our wiki and the loose personal notes I have.
I don't know if this falls to the grey area of the ethics of ROM hacking, but I'm willing to pay 100 euros to anyone who has the interest to dwell in the docs and code a functional level editor.
If this is unacceptable, I totally understand if this gets locked. If not, volunteer, and let's get this shit done :3
I found someone. Expect a Umihara Kawase Level editor WEB APPLICATION later this summer!