A Japanese man has become the first person in the world to hold a master's degree in ninja studies, after completing a graduate course that involved learning basic martial arts and how to stealthily climb mountains.
원문출처 : https://www.cnn.com/2020/06/30/asia/ninja-studies-graduate-intl-hnk-scli/index.html
원문출처 : https://www.cnn.com/2020/06/30/asia/ninja-studies-graduate-intl-hnk-scli/index.html