Sin Gi Su, a historian dedicated to the study of envoys between Japan and Korea in the Edo Era, died Saturday of pneumonia at a hospital in Osaka, his family said. He was 71.

Sin, a Korean native of Kyoto, established Seikyu Bunka Hall in Osaka’s Tennoji Ward in 1984 as a foothold of cultural activities for Korean residents in Japan.

As the head of the hall, Sin acted as a mediator between Japan and the Korean Peninsula for topics ranging from history to culture.

Sin also shot a film tracing the footsteps of the envoys who shuttled between Japan and Korea 12 times during the Edo Period (1603-1868).

He also filmed a long documentary about the resistance of Korean workers against Japanese colonial rule on the peninsula from 1910 to 1945.

In light of the focus of his life’s work — friendly relations between Japan and South Korea — Sin was pleased on his sickbed to see the two countries cohosting the World Cup soccer finals earlier this year, his family said.