An ordinary incident—dropping a pen in front of her boss—changes Reika's life forever. The innocent, pure image of the office lady gradually distorts. As her section chief repeatedly tramples her without mercy, Reika endures the pain while recalling a deep-seated emotional wound. This trauma, rooted in her student days, awakens once more under fresh torment. Amid agony and humiliation, Reika slowly sinks into an emotional abyss. Her expression shifts from mere disgrace to profound suffering. And the single sentence she utters reflects the essence of her entire existence up to that point.