Ever since I first met her, I couldn't help but notice how sexy my stepmother was. Unlike my wife, she had large breasts and a voluptuous, thick figure. A career woman, she came up to Tokyo to take care of my meals and daily needs while my wife was away on a business trip overseas. That means from tonight, I'll be alone at home with my mother-in-law. The atmosphere is tense, filled with the nervous excitement of a first date. Our relationship is no longer just a simple family bond—it's evolving into something special, hinting at the awakening of new, forbidden feelings.