Her husband, the boss of a designated criminal organization, suddenly disappears. He ensured his own safety by surrendering his territory to the police, but in exchange, his wife, Mirei, is now in grave danger. As assassins begin appearing one after another, Shinoge, a security officer dispatched from the central headquarters to protect her, arrives on the scene. Calm and composed, yet fully committed to protecting Mirei's life, his dedication begins to stir emotions within her, and she gradually finds herself drawn to him. Her everyday life as a female teacher, along with her traditional appearance in a red under-kimono, creates an almost dreamlike aura. As the boundary between fantasy and reality blurs, Mirei is slowly bound, teased, and seduced. When she finally awakens, the one before her is Shinoge—the very man who was supposed to protect her…