Ayaka is a minor/supporting role in Misao. In the Truth, she was resurected by Onigawara.

-Before the Curse-
After the player comes to school and attends class, the player gets to meet Ayaka during break, who is labeled as Aki's best friend and a 'fad follower'. She is shown babbling on and on about Mr. Sohta, her obsessive crush, while Aki states that she doesn't really care about Ayaka's current craze. In retaliation, Ayaka teases Aki on her crush on Tohma, whom she believes is just a flirty player.

-The Curse Begins-

After being teleported elsewhere, the player can find Ayaka in the teacher's offices, snooping around Mr. Sohta's desk. Still obsessed, Ayaka tells the player that she found love letters to 'HER' Mr. Sohta, and ignores the player's advice to find somewhere safe to hide.

-Finding Misao's Dismembered Parts-

At some point in the game, Ayaka discovers one of Misao's parts in Mr. Sohta's possession. This prompts her crush to effectively kill her in cold blood, despite not being one of the sacrifices required for the ritual to save Misao's soul. When Aki returns to the infirmary, Mr. Sohta explains that a monster had invaded and slaughtered her instead, showing Aki an injury from the 'supposed' beast and giving Aki one of Misao's parts, Misao's hands. this should be expected considering the fact that Mr. Sohta has a hand fetish.