Well, Fiarchelm is the size of Jupiter, with thirteen continents (six artificial), thirteen moons, and... that's it so far.
Iavene's moons are I, II (orbits I), III (orbits II) and IV (orbits III).
Crazy? Impossible? Who cares, Serenth runs on a different operating system than the Milky Way.
(As in, different laws of physics and all.)