Aoi is a character from the Working!! franchise.
Otoo finds Aoi abandoned at a train station and, out of kindness, allows her to work at Wagnaria. She tell him and the rest of the staff that she got separated from her parents after their house caught on fire and that she bumped her head during the confusion and is suffering from amnesia. Sota doesn't believe her tale and she does several things that support his opinion like forgetting to answer to her name (which she remembers despite her condition) but answering to, "the person pretending to be Aoi Yamada."
Aoi begins to live at the restaurant and gets in trouble with the chefs for taking items or rearranging storage space. She has a cheerful attitude towards most people and has shown herself to be cunning and willing to manipulate situations to her advantage if need be. She has also shown herself to be flat out terrible at keeping secrets or not commenting on subjects which everyone implicitly agreed to never bring up, which always surprises those around her.
Aoi is a character in both Wagnaria!! series, Working!!/Wagnaria!! and Working'!!/Wagnaria!! 2, published by Aniplex with animation production by A-1 Pictures and the 4-panel manga series Working!!, which is published by Square-Enix and serialized in Young Gangan magazine. Aoi's original design is credited to manga writer and illustrator Karino Takatsu while her anime version is credited to Shingo Adachi. Aoi makes her anime appearance in episode #7 of the original anime series.