Takashi Kotani, an advisor of corporate communications, pointed out another 2020 problem in Japan – Shortage of female directors in Japan – Unintended effect of Abe's Womenomics policies; firms will be scraping bottom of barrel.
http://jbpress.ismedia.jp/articles/-/40492
The Board Director Training Institute (BDTI) is a "public interest" nonprofit in Japan dedicated to training about directorship, corporate governance, and related management techniques. It is certified by the Japanese government to conduct these activities as a regulated nonprofit. Read a summary about BDTI here, and see a menu of its services for both corporations and investors here.