Are the Khufu and Sirius constellations in Saint saint seiya big or single constellations? What happened in Koga's dark little universe?

These two constellations are both single, but the origin of the myth is still related.

Koga and Aria are mysterious twins. In the first war between Saint saint seiya and the myth of Mars, they appeared when an alien meteorite came. They have powerful light and dark universes respectively, and the dark universes in Koga and Mars mythology both come from Apps, the god of darkness. Well, we don't know why the landlord asked us. When their dark universes merge into one, Apps, the god of darkness, will be awakened. Because Koga was raised by Athena, she was infected by her light property and Koga's own pursuit of light, and Koga also had light property. Because Apps, the god of darkness, was defeated, it is still unknown whether Koga's dark universe still exists.

Hope to adopt