Sato is a manga editor working at a publishing company, a job that forces him to constantly put on a cheerful, positive facade despite being a deeply introverted and negative-minded person. His daily routine includes visiting a small cafeteria near his office, where the usual quiet old man runs the place alone. One day, he is taken aback to find a boisterous gyaru waitress working there instead. Her high-energy, friendly demeanor immediately overwhelms him, as she keeps striking up conversation and invading his personal space. Sato soon discovers that this seemingly carefree gyaru has a major hidden secret that defies his expectations and complicates their interactions. As their paths continue to cross at the cafeteria and later through his work, Sato finds himself caught in a whirlwind of romantic tension and professional challenges. The story unfolds as a workplace romantic comedy, exploring the contrast between Sato's forced positivity and the gyaru's genuine exuberance, while gradually revealing the deeper reasons behind her behavior and the bond that forms between them. Notable narrative arcs include Sato learning to navigate his own insecurities, the gyaru's personal struggles that led her to take the job, and the ways their relationship disrupts and enriches both their lives.