This article provides an overview of the child limit law in Japan, its history, how it impacts Japanese families, any exceptions to the law, and the pros and cons of this policy. It also discusses recent changes to the law and their implications. The law limits each family to two children or fewer under the age of 18 years old and couples who violate this rule are subject to fines or other penalties depending on the severity of their violation. Despite some exceptions and financial incentives for compliance, it has become increasingly unpopular among many Japanese citizens who see it as outdated and unnecessary.