A

An artificial personality that belongs to the 'Wish-Crushing Cinema', the 'box' intended to destroy Daiya's 'box'. She acts as a guide as the movies are being screened. [Spoiler] 'A' is one of the forms of 'O', and the only form that has been illustrated. [/Spoiler] [Spoiler] The volume 5 reveals that the 'A' form was based on Aya Otonashi. [/Spoiler] (Source: Baka-Tsuki)