Very charming game! Very pick-up-and-play.
I think the challenge could be improved with different shapes, like an L or T shape. Currently, I could just drop down any item in a slot, without having to think ahead much.
Also, I had issues with healing the hero, it seemed that they would still become unhappy when I healed them, since I'd have to drag out a piece of loot (the potion).
Still! The art is adorable and charming, and it was a fun and unique experience!