noun
highest-ranking ninja; ninja clan master
Historical term for the top rank in a ninja hierarchy, often overseeing operations and strategy.
上忍は忍者の集団で最も高い地位にある者を指す。
A jōnin refers to the person of highest rank within a ninja group.
時代劇では、上忍が里の長として描かれることが多い。
In period dramas, the jōnin is often depicted as the head of the ninja village.