Today is a national holiday in Japan.
"Coming of Age Day".
https://www.officeholidays.com/countries/japan/coming_of_age_day.php
"The day honors young Japanese who will reach the age of 20 at any point during the year. Twenty is the age of maturity in Japan, and people who have reached this age gain the right to drink alcohol".
Today on TV they showed some of the different ceremonies and all the beautiful kimono's.
Also, every year there are a few "yankii's" who disrupt the ceremonies. This seems to be part of the tradition.
Congratulations to all the young men and women!