Matsuura Rei (松浦玲) is one of the most important writers of Bakumatsu-Meiji Restoration history. His work on Katsu Kaishu is particularly important. Kaishu is “the shogun’s last samurai” of my book Samurai Revolution. I referred to Matsuura’s Ansatsu (“Assassination” — above) in my new book, Samurai Assassins. Ansatsu was published in 1979, the same year I first set foot in Japan.