Estrella「エストレヤ」is the keeper of the orange rainbow, who comes from the kingdom of rainbows Skyriver. She is a main character of the Guardian Angels Of The Sky series. Estrella is Amber's destined partner.
Estrella is the keeper of the orange-colored rainbow, who used to reside at the shrine at Skyriver. She, along with her friends, was sent down to earth in order to find the ones born with the chromosome of light. Estrella is a princess like spirit who is overall very charming and gentle. According other Bijoushas, Estrella has formerly known as the Princess of Stars (星のプリンセス?). Estrella is very patient and always tries to forgive others for their mistakes. However, once Estrella gets angry at someone, she will tell them the truth of what she thinks of them. Then, her graceful aura has completely disappeared. Yet, it doesn't take long for Estrella to calm down afterwards. Estrella herself has said that she likes the side of herself the least.
- Tachibana Amber: Thanks to Estrella's powers Amber was able to transform into the Guardian Angels of light, Guardian Angel Aurorae. Both of them have a very elegant and graceful personality, which usually goes well together. However, Estrella feels like Amber's missing something. Something keeps her from using her full potential. Estrella works hard to support Amber to find what she's missing and grow to become the beautiful person she is supposed to be.
- Estrella is Spanish and means "star".
- Estrella's appearance resembles a chital.