Aoi Minase is a 23-year-old female with striking blue hair and eyes that shift between blue and green, standing 164cm tall. She serves as a sub-manager and waitress for the Pia Carrot restaurant chain, specifically attached to the "2nd" and later "3rd" locations. Her standard uniform includes distinctive earrings and she is always seen carrying her bag.

Her personality blends a cheerful, carefree daily demeanor with a fondness for beer and frequent visits to pachinko parlors for gambling. These habits mark her as someone who could influence younger employees. Within the Pia Carrot hierarchy, she works under her friend, manager Ryoko Futaba, at the 2nd branch. She also harbors romantic feelings for the boss, Yusuke Kinoshita, who oversees multiple branches after originating in the first series. Her career progresses to Chief Waitress at the 3rd location during Yusuke's temporary assignment there.

Her story unfolds across several installments. She first appears as a secondary character alongside protagonist Kouji Maeda in Welcome to Pia Carrot 2. Four months later, in Welcome to Pia Carrot 2.2, she holds the Chief Waitress position at the 3rd branch. She reprises this role and personality in the OVA adaptation Welcome to Pia Carrot 2 DX. Her narrative centers on her job duties, workplace relationships, and her portrayal as a somewhat irresponsible yet dedicated employee.