Aoi is a mysterious, self-proclaimed 16-year-old girl who Otoo meets on his travels to find his missing wife. He brings her back to Wagnaria where she starts working as a waitress and living in Wagnaria’s attic. While she has great confidence in herself, during work she is an unhelpful troublemaker who gets yelled at by other staff members, especially Souta. Since she is in training, her position among the staff is low, which she complains about. She is bad with dealing with Souta’s constant complaints about her, but she does write down some of his suggestions (along with idle complaints). She yearns for the idea of having a family, especially towards Otoo whom she sees as an ideal father figure, and goes as far as to apply to be adopted by him. Her favorite food is natto.

Set in a family restaurant in Hokkaido, the northern prefecture of Japan, 16-year-old high school student Souta Takanashi works part-time along with his strange co-workers: Popura Taneshima, a high school girl who's a year older than Souta, yet easily mistaken for an elementary/middle schooler, and Kyoko Shirafuji, the 28-year-old store manager who doesn't bother to do any work at all. 
(Source: NIS America)

A Japanese voice actor. She's also a certified junior and senior high school teacher.

Hirohashi was born in Niigata Prefecture, and her family's home was a Buddhist temple. Because of this, she attended Ryukoku University in Kyoto, a Buddhist university. In the middle of her first year, however, her parents told her that she could do what she liked, even if it wasn't related to Buddhism, so she sought out what she wanted to do. During her second year, she remembered a radio show she used to listen to in middle school and became interested in voice acting, so she started going to the Aoni Coaching School Osaka while attending university at the same time. The radio personality she had listened to in junior high school was a voice actor, which inspired her to become a voice actor herself.

Non-anime roles:
• Mast - Goddess of Victory: Nikke

The third season of Working!! 

The eccentric employees of everybody's favorite family restaurant will be going wild once again! 

(Source: Aniplex USA, edited)

The second season of Working!! 

Life goes on at the Wagnaria family restaurant as its peculiar employees try to provide a good service despite their individual eccentricities.
 
(Source: Anime News Network)

The 14th and final episode of the WORKING!!! anime.

Set in a family restaurant in Hokkaido, the northern prefecture of Japan, 16-year-old high school student Souta Takanashi works part-time along with his strange co-workers: Popura Taneshima, a high school girl who's a year older than Souta, yet easily mistaken for an elementary/middle schooler, and Kyoko Shirafuji, the 28-year old store manager who doesn't bother to do any work at all. 
(Source: NIS America)

Several characters announce the new season. 
Episode 1 - April Fool Announcement (Hana and Daisuke) 
Episode 2 - True Announcement (Aoi, Poplar, and Souta)

Aoi Yamada