Joshua was following the guidance of the Mirror of Holy Splendor at the moment, having advanced in the direction where the sun set for three days.
According to the map provided by the villagers of Jarien, the sun rises from the east and sets in the west in the world of Grandia too. At present, the heir of the fourth Sage's Legacy was to the warrior's southwest—it was the region that, according to the villagers, was where most survivors assembled to resist the Death Shades.
The dot of light that blinked from time to time in the Mirror of Holy Splendor would occasionally shift its position. It meant that the fourth heir was using instant movement in that time, although the circumstances were not at its worst since the Azurite did not shift abnormally.