It is by no means an exaggeration to say that in all places such as the airport, stations, lodgings, shopping centers, parks, tourist spots, and any places that visitors to Japan frequent, there will always be a public toilet. I wish Asian countries japnese style toilet wake up and join the 21st century when it comes to their bathroom fixtures.
Many Japanese toilets have two kinds of flush: However, those were never very popular, and only a few of them remain, including those underneath the now demolished National Olympic Stadium from the Summer Olympics in Tokyowhich was added to accommodate people from a wide range of cultures.
The difference is in the amount of water used. All other fixtures, such as the water tank, piping, and flushing mechanism, may be identical to those of a Western toilet. As most Japanese homes lack central heating — instead using space heating — the bathroom may be only a few degrees above freezing in the winter.
Many Japanese women are embarrassed at the thought of being heard by others during urination  see paruresis. Many people carry a handkerchief with them for such occasions,  and some even carry soap. Although they might appear quite similar, this button is different from the flush button, so please take care not to confuse the two.