Kai's Tokuhon

Japanese: 甲斐の徳本 - かいのとくほん

…His book, Keitekishu (1573), vol. 8, was also widely read. Nagata, calling himself Chisokusai, did not seek fame, but traveled around the country practicing medicine, and was respected as the "Tokuhon of Kai."
[The spread of European medicine]
After a Portuguese merchant ship was wrecked on Tanegashima in 1543, the way of exchange with Europe was opened.

From Tokumoto Nagata

…His birth year is unknown, and his death year is said to be 1630 (Kan'ei 7) at the age of 118, 1649 (Keian 2) or 1652 (Sho'o 1) at the age of over 90. There are also various theories about his birthplace (Mikawa, Mino, Shinano, Kai). He lived in Kai for the longest time, and was called Tokumoto of Kai. He was known as Chitokusai, and was also called Kendou and Kayado. …

*Some of the terminology used in reference to "Kai no Tokuhon" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…著書《啓迪集》8巻(1573)もよく読まれた。永田は，自らは知足斎と称して栄達を求めず，諸国を遍歴して診療をし，〈甲斐の徳本〉とよばれて尊敬された。
［ヨーロッパ医学の伝播］
　1543年ポルトガルの商船が種子島に漂着してから，ヨーロッパとの交流の道がひらけた。…