Aoi and Ichigo have been best friends since they were young. The two first met at a festival where the latter was dancing to Guppy, an idol. She's highly knowledgeable about idols and the entertainment industry, but before that, she studied many cultural arts such as the violin, horseback riding, the piano, etc. As a result, she is often referred to as the “Idol Professor” (アイドル博士 Aidoru Hakase) or Aoi-sensei (あおい先生). After the two joined Starlight School, it was revealed that Aoi got the best score out of around 1000 people on the test about past idols for the entrance exam, having answered every question correctly. At the end of Episode 2, she became Mizuki Kanzaki's temporary manager after winning an audition against Ichigo. Her favorite brand is Futuring Girl and her stage color is blue.