Chisato Mera juggles multiple part-time jobs, driven by significant financial struggles and the urgent goal of saving money to visit her father in Puerto Rico. Her economic hardship forces her into various employments, though her reliability proves questionable; she notably consumed a customer's coffee jelly instead of serving it during a waitress shift, highlighting recurring unprofessionalism. Her character evolves across the series. Initially presented as a generally tolerable and likable figure in the first season, her portrayal shifts toward a more singular focus on extreme gluttony in the second. This manifests in impulsive food-related actions, including stealing meals directly from friends during social interactions, even after their payment. A particularly infamous incident occurs in the second season's seventh episode, where uncontrolled hunger drives primal behavior – snatching food from peers and causing significant friction. She later attempts to mitigate the damage through subsequent assistance. Mera's personal life involves a subplot where her friend Mikoto's divination reveals her father relocated to Japan. This news intensifies Mera's work efforts to reunite with him. The situation escalates further as loan sharks pursue her over unpaid debts, inadvertently dragging other characters like Kusuo Saiki into her financial troubles. Despite her efforts, her actions frequently strain relationships. Her single-minded focus on food often overshadows deeper motivations like familial obligations and economic hardship. Her background and actions consistently generate comedic yet disruptive scenarios within the narrative.