Aika is one of the 1st years apart of the stargirls. She has orange hair and yellow eyes. She is one of the most mature, despite her being one of the youngest of the group. She loves to do yoga and she goes on runs every night. As one of the costume designers, she gets most of her inspiration from reading or flipping through fashion magazines. Aika has an eye for good fashion, which is why she wants to become a fashion designer one day.

Aika is best friends with Akane, and they like go window shopping together so Aika can find inspiration for her designs. When they aren't doing that, they are writing lyrics together at a cafe (usually around the night).