Why toilet is in the floor in Japan?

Why toilet is in the floor in Japan?

This article explores the history and benefits of floor-level toilets in Japan, which have been popular since the 16th century. These toilets require less space than traditional Western models, are easier for elderly people or those with mobility issues to use safely and comfortably, are aesthetically pleasing, and may be considered cleaner and more hygienic due to their distance from the ground surface. Challenges include cleaning around them being difficult due to their proximity, as well as it taking some getting used to if not accustomed to squatting while using restrooms. Considerations for installing one include making sure there is enough space available, who will be using it, and ensuring proper ventilation.