Dark Sirius
First Appearance

Pretty Soldier Sailor Moon ~ 10th Anniversary Festival - Sanctuary of Love

Dark Sirius is a planet that was the third planet of a system in Orion. However, the planet had no sun and because of this, a man named Dark Nibiru formed a group and went to Earth to take the Silver Crystal so that it could be their sun.


  • The planet never appeared in the musicals per se, but it was mentioned a couple of times and it was very important to the plot of the musical it was mentioned in.
Dark Sirius

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