Zefie

A blonde haired Vagrant AI who is the focus of the story, Shugo and his friends protect her from Kamui and the debuggers while searching for the entrance to Netslum so she can be reunited with her mother. She originally mistakes Shugo for her mother due to the Twilight Bracelet giving him the same "scent" as Aura,and is very possesive of him calling him brother.When it comes to the rest of Shugo's friends she only likes Mirei and won't think twice about using her powers on the others if they contradict or belittle her. Like all Vagrant AIs she can bend the rules of the System with ease and she bears a resemblance to Lycoris which explains Kamui's hate and strong desire to delete her.