And the three silhouettes in her back are probably Nova (Ultraman Leo 49th episode), Alien Pegassa (Ultra Seven 6th episode), and Silver Bloome (Ultraman Leo 40th episode).
The new anime’s teaser visual features a new girl who is believed to be inspired by Black Directive from the seventh Ultra TV series Ultraman Leo (1974-1975).
As the ongoing second season is approaching its climax, it was announced at the AnimeJapan2018 that a new anime series from the Ultra Monsters Anthropomorphic Project, titled KAIJU GIRLS BLACK, is now in production.