Sharing Japanese culture with new friends: Natsuki Taka (middle), one of the new visiting Japanese students from Fukuoka University showing her “Coming-of-Age Day” picture in social time. “Coming-of-Age Day” is a national holiday in Japan to encourage those who have newly entered adulthood to become self-reliant members of society. Municipal governments host special coming-of-age ceremonies for 20-year-olds.