Aoi is Kaoruko's friend and Terumi's second target. Aoi's personality is cold and unfriendly, she also teases people that are more prettier than her. She is based on Aoi no Ue. She owns her own nail salon and because of this she is too busy to take care of house chores, this becomes a chance for Terumi and offers to help her. It is later reviled that Aoi has a father complex show when she was having sex with Terumi while calling out to her father.