Aya Kujou

Aya is Tamaki's younger sister who grew up in an orphanage with him. Due to his family's debt, Kujou Takamasa adopted Aya as his daughter with the goal of creating an idol who would surpass Zero, just like the ambition he gave to Tenn. Until finally, Aya lived with Kujo and also became Tenn's adopted sister. Aya is Tamaki's main motivation for becoming an idol so he can meet his sister who was separated from him. Currently, Kujou is training Aya abroad, specifically in America. When Kujou was still training Haruka, Aya was said to be close to Haruka and according to Kujou, Aya was Haruka's girlfriend.