Arata's "Other Self"

Arata's " other self " is was one of he many mysterious hooded figures that were made from the water coming out of Black★Gold Saw's watering can.

Black★Rock Shooter (2012)
Black★Gold Saw created her them by pouring water droplets from a watering can. She sprouted from the ground with many other hooded figures. Black★Gold Saw took an interest in her.

However, Black★Rock Shooter breaks into the area and pursued Black★Gold Saw but her shots missed her, hitting and disabling many of the hooded figures except the one that resembles Arata. Black★Rock Shooter walks up to it and holds her hand up to her, but she continued to tremble in fear of her, and as a result Black★Rock Shooter ignites her eye-flame and beheaded her, while in the real world, Arata keels over, and Mato Kuroi and Saya Irino sense it.

Later after Insane Black★Rock Shooter is defeated, this resulted in her being brought back, as she is seen standing next to Black★Gold Saw along with the other hooded figures, her restoration seem's to have brought back Arata's feelings for Takuu.