Mayu Warito is an employee at Mujina Company, known for her diligent work ethic and professional dedication. She suffers considerable workplace stress, frequently manifesting as nosebleeds, stemming from job demands and company interactions. Her responsibilities involve navigating challenges posed by the unconventional leadership and business decisions of the child CEO, Najimu Mujina.

Mayu maintains professional relationships with colleagues, including secretary Yuki Karuizawa who handles significant portions of the company's essential operations. Her role requires her to navigate various corporate situations such as fielding customer complaints, participating in routine office cleaning, and fulfilling assigned errands. This workload contributes to her portrayal as an overburdened yet committed corporate employee within the company structure.