It’s official; it’s 10 of 19 cabinet members including Prime Minister Abe, or 47%. If you insist on counting a great-grandchild or Ishihara, it’s 10 of 19, or 53%; add both and it’s 11 of 19, or 58%. I would count Ishihara but not the great-grandchild, but maybe that's just me.
Two cabinet members are women. In a more significant gender-related move, two out of the three major LDP political assignments have gone to women, and one of them has been seen as potential prime minister material. Abe is trying, trying hard.