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

Miki lives with her daughter and her husband and wife in two households. The relationship is good, but the fact that she has little relationship with her husband has made her frustrated. While living such frustrating days, she accidentally sees her son-in-law, Shinichi's huge cock... and is captivated by this manly and magnificent thing, unable to contain her urge to ejaculate, and squeezes him anywhere. Shinichi, who has not had sex with his wife due to the constant lewd temptation of his stepmother all the time, is unable to hold back his wife and sighs his voluptuous body...