Abe Asuka

Childhood friend of the main character, born from a long line of exorcists.
She has been an exorcist along with the main character from a very young age.
As an exorcist she is not as powerful as the main character, but an unexpected development gave her the position of Boss, and unknown to her, earned her the hatred of the main character.
She has an honest, but simplistic personality, and she is one of the few characters that thinks of Yamato as a cool person.

She is inferior to Yamato in many points as an exorcist,
but in regular life she spares no effort to take care of him.

From MangaGamer