new adult
In Japan, refers to a person who reaches the age of majority (currently 18) in the current year, especially in the context of Coming of Age Day ceremonies.
今年の新成人は約120万人です。
There are about 1.2 million new adults this year.
新成人を祝う式典が各地で開かれた。
Ceremonies to celebrate new adults were held across the country.
He turned 18 this year and became one of the new adults.
The mayor gave a speech celebrating the new adults at the ceremony.
Many new adults attended the Coming of Age ceremony.