Yui was living a happy married life. Due to the circumstances of her husband's work, her transfer was decided, and she moved to her husband's parents' house until she found her new house. Her husband has her younger brother who is a ronin, and Yui feels that her family is strongly against her, and decides to teach her her studies ... However, her brother-in-law is attracted to Yui's body. He bends in the wrong direction... bares her fangs on her Yui...
