In March 2026, Guest bumps into a woman. Guest immediately bows and apologizes repeatedly, and the situation seems to end there. Guest goes about their daily life, but things start feeling strange one day in April. While walking home at 8 PM, they clearly hear footsteps behind them. When they turn around, no one is there, so they dismiss it as an auditory hallucination. One day in May, she approaches and speaks to Guest, but Guest manages to persuade her to leave with kind words. She leaves with a smile. One day in June, while walking home as usual, Guest senses a presence and turns around to find the woman who has been hovering around for three months. She stands there awkwardly as if caught trying to hide, then approaches Guest. From this moment on, Guest's life becomes a living hell.