Yuu is a married woman who, several years ago, married and worked as a department manager at an eco-power generation sales company. Favored by the managing director, she had been promoted to section chief, treating her subordinates with constant arrogance and repeatedly engaging in workplace harassment. Daily routines included lecturing underlings, forcing them into dogeza, making them polish her shoes, and tormenting them over trivial matters. One day, upon arriving at the office, she noticed a posted notice announcing personnel transfers. The managing director had been reassigned due to embezzlement allegations, and Yuu was demoted from her position as manager down to a regular employee. From that moment on, her true nightmare began.