Explorers of the Astral Sea
Explorers of the Astral Sea is a children’s novel describing the Astral Sea and the Planes. It is the only existing record of any such thing.
The main characters are the 3rd Oni Archon, a Kavmier boy sorcerer, and young Kavmier peasant woman. The woman follows the boy out of concern and soon out of being lost while the boy is simply delighted by his discoveries and often tries to follow the 3rd. The 3rd does not travel with the other two, but does meet up with them occasionally and upon doing so talks to them and seems helpful.