A ceremony celebrating reaching adulthood (traditionally age 20); often a municipal event for new adults.
来年、成人式に出席する予定です。
I plan to attend the coming-of-age ceremony next year.
成人式で振袖を着る女性が多い。
Many women wear furisode (long-sleeved kimono) at the coming-of-age ceremony.
市の成人式は新成人のみ参加できます。
The city's coming-of-age ceremony is open only to the new adults.