It is an OLD news. And it went viral last year
Recently I read about Japanese walk braless, but the students do not wear underwear.
I read a shocking report, it was also revealed that if students were not wearing any underwear, then students were asked to take it off as punishment and children's grades would be spoiled if they did not follow the rules. The people who prepared this report said that there is a tremendous violation of privacy and human rights in these schools of Japan.