This article explores the prevalence of psychopathy in Japan, its causes, impact on society, available treatments, and response by private organizations and government agencies. It is estimated that 5% of Japanese adults show some signs or symptoms associated with psychopathy, slightly lower than other countries around the world. Potential factors that could lead to psychopathy include genetic predisposition, environmental influences such as childhood trauma or neglect, neurological abnormalities, and social factors such as poverty or lack of education opportunities. Psychopathy can have severe consequences for both individuals and society at large if left unchecked or untreated. In recent years there has been an increased focus from both private organizations and government agencies on addressing issues related to psychopathy within Japanese society through various initiatives.