Alcyone

Alcyone (アルキュオネ, TBA) is the

Trivia

 * Alcyone are likely named after the Greek myth of Alcyone, who was transformed into a Halcyon bird, a kind of kingfisher, by the gods.
 * According to Kore Yamazaki's Twitter:
 * Alcyone can't take off her mask because it's part of her face. If she takes it off, it would completely peel off from her skin and nothing would be left behind.