Japan may seem like a futuristic wonderland, what with its high-tech toilets and their array of functions that clean your bottom, heat your cheeks, and even provide sound effects to cover the natural ones that accompany your bathroom business. But technology is constantly evolving at a rapid rate, and each new innovation replaces something that used to be cutting-edge.
Case in point; every spring, thousands of young Japanese people leave home and move into their first, low-rent apartment to start school or a new job, and you can expect at least a couple will be shocked when they go to take a shower, discover this giant contraption next to the tub, and have no idea what it does.