Japan's shut-in problem, also known as hikikomori, is an increasing social issue in the country that affects between 700,000 and 1.5 million people. It refers to individuals who have chosen to socially withdraw from society and live out their lives in isolation. This article explores the causes of this problem such as economic instability, educational pressures, and lack of mental health support, its impact on Japanese society including loss of human capital and strain on government resources, and potential solutions being proposed such as increased awareness & education and professional counseling services.