Yeah it was an odd theme for a jam ahah
We too came up with some ideas for platformer or adventure like games with reverse mechanics but we weren't totally convinced so it was hard to find a satisfying idea. In the end our main developer Saturas came up with something that sounded good and we went for that, if you want to give our game a shot it would be great :)
Your take on the theme is original in my opinion and the game is fun and different!
This is our second/third experience in a jam and we are learning a lot as well, it's and awesome experience!
Best of luck!