Undercover agent Sumire, known as the Razor Investigator, possesses a cold and beautiful exterior that contrasts with her deep-seated nasal masochism. Her secret is uncovered by the enemy, leading to intense torture that pushes her to the brink of endurance. Her nasal senses are excessively stimulated, causing her to lose all rationality, ultimately culminating in the extreme measure of an enema. The overwhelming sensations of shock and pleasure throughout this process profoundly deepen the narrative.