Should women be entitled to period leave? These countries think so
https://edition.cnn.com/2020/11/20/business/period-leave-asia-intl-hnk-dst/index.html
It's embarrassing for Japanese to offer period leave. That's why few females offer period leave in Japan. Especially when their bosses are males, it's much more difficult for them to offer. So, as the first step, it would be necessary to create a system to let them offer paid holidays without noticing bosses reasons.