The biggest surprise for foreign travelers in Japan is the Japanese style restroom. It is unbelievably unique so that almost all travelers freak out when they see it. Don't worry, let me explain how you can overcome this crisis. First, step over and face the raise. Loosen up the belt. If you wear skirt, bring it higher. Drop the pants and under wear together, and take a crouching posture. Be careful, if you put some items like wallet in back pocket, they might drop. So, drop pants slowly.
If there is holder pipe placed in front of you, you can use that to hold your weight. When you finish, you wipe your bottom from behind, then stand up and put your pants and under war back.
Don't forget to flush!