Married woman teacher molestation train - despicable and lewd commute

Okumura Keiko (Hojo) is a female teacher who has been appointed as the head of the grade for over 10 years since taking on the teaching position. One day, I see a female student crying on the side of the road. When I called out to her, she said, "I was molested on the train." Apparently, other victims have been suffering, and Keiko, who has a strong sense of justice, gets angry at the despicable molestation and begins guarding her on the train. Keiko takes care of the students on the crowded train. But before you know it, a suspicious shadow creeps up behind Keiko's back, and her hands go to her lower body...