I like the story and the music is very relaxing. It took me some time to figure out what to do in this room since the water at the top was a bit hard to distinguish from the background. I'm looking forward to playing the version with 100 rooms!
Also I just saw your question on Discord about how to implement a wavy water surface. I used this idea in my previous game jam and I think it could work well with your game as long as you don't make the waves too large for readability.