Taiûkǔrǔ is a small moon that serves as an adopted homeworld for spirelings wishing for a life beyond the upper reaches of their spires. It is listed as a Guild-World, as the spirelings fall outside of the Imperial hierarchy just like the chartered Guilds, according to one of the most ancient treaties still in effect. The spirelings boast that not even the Shadow Emperor dared to break it, but the treaty entitling them to Taiûkǔrǔ has been nearly broken several times, which led them to joining the Guild alliance of the Tasǔhn Company.
Technologically, it is known for its arcane devices that keep an atmosphere tied to the low-gravity moon. Normal humans are seldom allowed there, though many were allowed use it as a safe haven during the rout following the Thôvis Crusade's spectacular defeat by Sǎrthîon.