Aimi lived with her husband and her father-in-law, who needed care. Their peaceful daily life continued until one day, her husband sacrificed himself to protect Aimi in an accident and never returned. After that, Aimi started living with just her father-in-law, but his loneliness from losing his son began to warp his personality. His hidden perverse tendencies surfaced, and Aimi gradually found herself being consumed by her father-in-law's rampant sexual desires…
