Widow Miki Mayuzumi, burdened by debt following her husband's death, is forced to work as a rental wife to survive. Her clients include a sensual novelist and an elite trading company executive—both sharing a common fetish: anal sex. To endure her harsh reality, Miki submits to their desires, navigating a desperate path between survival and sensuality. This story unfolds as a poignant, intense episode where sorrow and passion collide.