Ninja Researcher Yuji Yamada Supervises Bilingual Book 'NINJA'
Natsume-sha will publish 'NINJA,' a Japanese-English bilingual book on ninja history and culture, on Thursday, October 15. Yuji Yamada, a Mie University professor and president of the International Ninja Research Association, supervises. The A6 format book runs 160 pages in all color at 1,650 yen. It covers ninja attire, tools and weapons, ninjutsu, ninja mansions, philosophy, and daily life across six parts, with illustrations.