The Celestial Squad in Legends of Spirits

You knock on the door and it opens up. You see a young woman standing in the doorway. She has shoulder-length hair that is icy blue in color. She's wearing a blue T-shirt and a pair of jeans.
"Well hello there," the woman said, "I'm Lunaria Aquarius. Welcome to the Celestial Squad Headquarters. Now do you have a letter of some sort?"