"성인" is the Korean term for "adult," referring to a person who has reached the age of maturity, typically 19 years old in South Korea. This age signifies legal adulthood, allowing individuals to vote, drink alcohol, and enter into contracts. In many cultures, including Korean society, becoming a 성인 is often celebrated with ceremonies such as 성년식 (coming-of-age ceremony). This event marks the transition from childhood to adulthood, emphasizing responsibilities and societal roles that come with being an adult.