The Tokyo bathrooms are very special, first off, you have to wear certain slippers when in the bathroom but can't wear them outside of the bathroom or else it contaminates the house. You also have to clean your body with just soap and then soak in the bathtub, everyone in the house uses the same water. Last but not least, the toilets are very high tech. They have electronic buttons that can play music, and clean down there if you need extra help.