OBA-153 Sayo Makino, the teacher I admire and reunited with after a long time

Sayo, who left her job as a teacher to become a married woman, and Yoshino, who graduated from school and is now working as a successful trading company employee, were once teacher and student, but they made a one-time mistake. Then, 12 years later, the two meet again on the night of their class reunion. Sayo cannot hide her shock, and memories of the past inevitably come flooding back to her, and she begins to think of Yoshino, who has grown into a strong man, as a member of the opposite sex. From then on, they once again build a twisted relationship, not as teacher and student, but as a married woman and a young man...