Northern Route: Journey through Siberia and Northern Route: Journey through Sakhalin are nonfiction volumes for young readers in which Yoshiharu Sekino physically retraces a possible route by which the Japanese people came to the archipelago. The journey from Siberia through Sakhalin toward Hokkaido connects human migration with local ways of life.

A travel record that asks where people came from, not through maps alone but through the body in motion.