This article explores the history and current laws surrounding marriage in Japan, what is considered family in Japan, whether it is possible to marry a relative in Japan, potential legal consequences of doing so, cultural considerations when marrying a relative in Japan and some frequently asked questions about marrying family members in Japan. Generally speaking, it is possible to marry a relative in Japan provided that certain conditions are met according to Japanese law; however there can be serious legal and social consequences associated with doing so which must be taken into consideration before making any decisions regarding this matter.