“You’re a learned man, so perhaps you’ll know this. Among the castles in Japan right now, how many have donjons, and in which provinces are they?” “The castle of Satomi Yoshihiro, at Tateyama in the province of Awa, has a three-story donjon that can be seen from the sea. Also, at Yamaguchi in the province of Suo, Ouchi Yoshioki built a four-story donjon at his main castle. It is probably the most imposing in all of Japan.”

