Tokaoguchi is a city located on the Luthien continent of Hokkaido, north of the planet's equator and the Nijunen Desert. Tokaoguchi's population, including the surrounding area, is less than one million.
- Jihad Turning Points: Luthien, pp. 3-4, "Atlas"
- Jihad Turning Points: Luthien, p. 19, "Hex map"