The ghost hunting idea was a really fun use of the limitation and I really enjoyed the art style! The designs feel very lively and given the short period of time, the amount of work put into the art and gameplay is very impressive.
The only issues I had were really just polish related. The tutorial blended into the rest of the UI, so I didn't even notice it was there for a little bit and accidentally started an investigation with nobody recruited. I thought I was softlocked until the investigation period eventually ended. Once I figured that out though and started to learn the mechanics, I started to have a lot of fun strategizing how to track down the ghosts. I think it could really be fleshed out and polished up into an enjoyable full game