Crystal

Crystal is a girl which's place of birth is unknown.

Story
She happened to appear in Tokyo seemingly out of nowhere. Luna questions her sudden appearance, but shrugs it off relatively quickly. Soon enough, Crystal had been the target of a demon, which soon attacks her. Just as she tried to escape, the Sailor Senshi appeared and battled against said demon, while Sailor Uranus brought Crystal into safety. Unluckily for them, the demon overpowered them and caught them. That was when Crystal rearrives at the place, throwing nearby stones at the demon. Infuriated, the demon once again gave chase after her. Soon enough, they reached a dead end. As the demon prepared to take off Crystal's life energy, it is stopped by a great light coming from her. Golden bracelets had formed around her wrists and with seemingly otherworldly energy, she pushed the demon against a nearby wall with power sonic waves, freeing the senshis. Not soon after, she escaped. Jupiter and Mars followed her, while Moon finished off the demon with her new moon scepter. However, they lost Crystal soon enough. Luna suggests to look for her, for she had felt a great amount of magic rising the moment Crystal used the Sonic waves.

Soon enough, they casually find her sitting on a bench within the park. After questioning her origin, Crystal replies that she does not know either.