TOKYO — A Japanese high court has approved a legal gender change for a transgender woman without requiring compulsory gender-affirming surgery, a step that LGBGQ+ groups on Thursday called a mixed victory. Under the law, transgender people who want to have their gender assigned at birth changed on official documents must be diagnosed as having gender dysmorphia and must undergo an operation to remove their sex organs. The Hiroshima High Court ruled Wednesday that the current requirement is possibly unconstitutional, signalling a change in how gender issues are being addressed in Japan.