Nysa
Current ruler:	Unknown
Previous known rulers:	Dionysus (officially), the Guild (de facto)
Known cities	Unknown
Distance from Earth:	17,000 light-years
First appearance	BTI 135

Nysa is a planet in the Olympian Galaxy, the former capital of the Dionysus sector. A planet constantly in the shadow of its large moon, Nysa served as a permanent planet-sized party for Dionysus. With no economy or industry to speak of, the entire planet passed the time with drunken orgies.

Most of the population was disintegrated when Noriko Null used the Heart Of The Universe to destroy the Guild.