Vertical Bathroom / Bathroom product

According to CNN, around 40 percents of people share a bath room with other people, living in a congested district for poverty. Therefore, I envisioned the least expense and space bath room with making better use of a space to allow them to have their own private bath room. In the cuboid-shaped bath room, we do not need to take a step at all because we can take care of shower, wash up, and even excrement at one place.