This article explores the various laws that govern children in Japan, including age limits, parental responsibility, education requirements, and more. It also looks at how these laws are enforced and what resources are available for those seeking to learn more about them. The primary law that governs children in Japan is the Civil Code of Japan (Minpō), which sets the age limit for marriage at 18 years old and requires all children under 20 years old to have parental consent before they can get married or enter into any legal contract. Additionally, parents must provide necessary support for their child until they reach adulthood (20 years old) and all students must pass national exams prior to graduating from high school. Other important child-related laws include the Juvenile Protection Law, Child Abuse Prevention Law, Child Welfare Law and Adoption Law. Japan has several mechanisms in place to ensure that its child laws are followed properly.