Her husband had always left their son's education entirely to his wife, Yuko, but due to exam stress, their son became a recluse. Overwhelmed by the crushing pressure, Yuko silently bore her growing despair. One day, her son's homeroom teacher, Ozawa, came for a home visit and, with his gentle kindness, touched Yuko's heart. Shaken by his warmth, Yuko could no longer hold back her emotions and broke down. Responding to her vulnerability, Ozawa gently embraced her. Seeking to fill the emptiness inside, their bodies pressed tightly together, lips meeting in a deep, passionate kiss. That intense moment gradually consumed Yuko's heart, pulling her deeper and deeper into a forbidden relationship with Ozawa.