The land of Kumaso is part of the tale of Yamato Takeru which is recorded in the Kojiki. The history of Komaso started and ended before the Taihō Code was established at the beginning of the 8th century.
- Brinkley, Frank. (1915). A History of the Japanese People from the Earliest Times to the End of the Meiji Era, p. 40.
- Burke, Stephania, "Hero's Journey for the Yamato Takeru Myth in Kojiki (712)", History Through Literature Project, Office of Resources for International and Area Studies (ORIAS) at the University of California, Berkeley; retrieved 2012-6-24.