Kyu'kyu (Kai'pua III) is the third planet from the sun of the Kai'pua system, Xi'an Empire (SaoXy'an). A gas dwarf, it has a thick but low-density hydrogen and helium atmosphere that surrounds a rocky core. There is an ocean of liquid water under the clouds, leading researchers to speculate that the planet could possibly be terraformed.
House Kr.ē's Council of Three debated setting up a small platform-based colony in Kyu'kyu's upper atmosphere, but Emperor Kr.ē ultimately dismissed the idea to keep traffic from increasing in the system and affecting R.aip'uāng's tranquility.