My stepmother is always craving a big dick from my son-in-law.

Reiko hasn't had sex in the evening since her husband was on a solo business trip. When this arousal didn't go away, he accidentally witnessed the huge cock of his son-in-law Tetsuya, who he was living with... When Tetsuya sees sexlessly masturbating alone, Leiko tells herself, "As a mother, I'll take responsibility and make it easier," and pushes him down while her daughter is asleep. From that day on, her sexual desire, which had been suppressed to the limit, exploded, and she played with her powerful cock, which had become so hard...