This article provides an overview of the customs and rules associated with using the toilet in Japan. It explains that most toilets do not have built-in roll holders for toilet paper, and there are two main types of toilets commonly found in Japan: Western-style and Japanese-style (squat) toilets. It is safe to flush toilet paper down a Western-style toilet, but it is not recommended to flush it down a Japanese-style squat toilet as it may clog up the pipes due to its thickness and size. Additionally, some public restrooms may require users to pay for their use or provide special amenities such as bidets and air dryers.