Yutori Tanaka is a high school student holding a part-time position at Popuu, the marketing department of a toy company, where she represents Japan's teenage generation in a multigenerational workplace. Her name, meaning "taking it easy," directly reflects her relaxed and carefree approach to responsibilities.

As a workforce newcomer, her naïveté and lack of common sense surface frequently, requiring explicit, step-by-step guidance for basic tasks such as refilling photocopier paper or moving boxes. She embodies Genki Girl traits through energetic and unrestrained behavior, often disregarding social norms by answering personal calls during meetings, publicly revealing coworkers' private medical conditions, or accessing confidential employee records without authorization. Constant curiosity fuels misunderstandings, like mistaking a spherical puzzle for an "adult toy" and later misapplying business jargon like "explosive sales" to describe physical attributes.

Within the office Comic Trio dynamic, she functions as the "boke" (comedic foil), prompting reactions from coworkers to her unpredictable actions. Her work style clashes with established routines; she refuses overtime, leaves tasks unfinished, and dismisses structured schedules as unnecessary, forcing colleagues to accommodate her oversights. Despite her generally disruptive presence, isolated incidents reveal unexpected capability, such as effectively nursing an ill coworker back to health without error.