First things first, absolutely adore the character designs, their art and animation as well. You must have put plenty of effort there. The idea of haunting and posessing others certainly gives room for kinky action.
The grid movement lends itself well for a puzzle game. I'm interested to see what you can cook with this idea.
Sometimes selecting a character felt a bit hard, no matter how much I tried clicking on them, but otherwise the game was working.
You definitely could add more characters and therefore variety of interactions between them and objectives.
Nice work.