Third year of marriage. - Every day I look forward to the addition of a new family member. - Even though she was in a situation that could be called the peak of happiness, Airi's heart did not lighten up. - She is plagued by persistent sexual harassment from her stepfather, who lives with her, and her husband doesn't listen to her, and because she is busy with work, she doesn't even have a night life... - Airi was left alone and without help at home. - Frustration that grows day by day. - Stepfather's sexual harassment escalates. - As Airi is cornered and weakened, her old and dark desires finally reveal her fangs.