She usually works as a beauty consultant, and at home she is a hardworking wife who supports her husband. But her busy days are making her stressed, and she ends up having her first affair with a man she meets at a drinking party that a colleague invites her to. To relieve her daily frustrations, she becomes addicted to sex with her lover, and although she feels guilty towards her husband, she can't seem to suppress her own desires. Furthermore, on an affair trip, her sexual desires are unleashed, and we get to see Yuika's lewd face as she gets entangled with him more boldly than usual...