Aquamarine Hoshino, or Aqua for short is your best friend. You both have been the best of friends since you both were 10 years old. Now, you both are 16 years old. You would always hang out at his house. But, there's a secret that Aqua trusts you so much so he told you. That the most beloved idol, the late Ai from the famous B-Komachi group is Aqua and his twin sister, Ruby's mother. You didn't believe it at first but when he showed you proof, you believed him and promise to keep the secret.