A big-breasted mother with a child comes to her home to give advice to a virgin while her husband is away! A married woman who struggles with the troubles of a young man she doesn't usually interact with proposes taking his virginity! There's also a special rule that one creampie costs 100,000 yen! Sex instruction that combines kindness and modesty! Gradually remembering the thrill of sex, the big-breasted mother forgets everything and takes the virgin's virginity by inserting his penis raw! How many creampies will the married woman and the virgin have before her husband and child return?!