This article discusses the consequences of staying in Japan illegally, such as fines, imprisonment, deportation proceedings, banishment from re-entering the country for several years or even permanently and loss of employment opportunities. It also explains how to avoid an illegal stay by obtaining a valid visa prior to entering the country and making sure that it remains valid throughout your stay. Additionally, visitors must not violate any other laws while staying in Japan such as working without permission or engaging in criminal activities as these can result in additional penalties or criminal charges upon discovery by authorities.