LGBT discrimination: Ambiguous from 2018 to Jun 23, 2023.
Though a new law was passed in June 2023, this law merely "promotes the understanding of SOGI" and only refers to anti-discrimination in principle. It does not specifically ban or illegalize LGBTQ discrimination.
Sources: hrw.org/news/2023/07/12/jap…
elaws.e-gov.go.jp/document?… (in Japanese)