Imamura, Sayaka

今村さやか

She portrays Rabian Pink/Purple Rayer (Remy) on the "Cosprayers" show and is particularly adept at voice imitation.
Her petite stature and childish demeanor often lead people to assume she is younger than her actual age of 14.
Imamura knows that Naoto is the scriptwriter; she also harbors feelings for him and becomes frustrated because he never notices her.
It is implied that she is the one eavesdropping when Mistuki has a secret conversation with Naoto, revealing that he will be the show's scriptwriter, thereby informing the entire cast that he (Naoto) is actually not a trainee cameraman.