The Miura family can't get out of a difficult life, even though their husbands work late at night to manage the family budget. Eriko let out a sigh in such a life, and the couple's distance grew farther. One day, Eriko decides to reduce her son's pocket money. However, her son strongly objected, and Eriko, who thought that the reaction was strange, forced her son to see the contents of her son's bag, and there was a naughty book in it.
