Five years have passed since I retired from my job as a teacher. Her husband, who was kind to her when they were newly married, now lies about going on business trips and is always away from her home. The person who supported me during those empty days was my student Taka-kun. He used to be unreliable, but now he is a respectable member of society, and we often meet each other once a month when it is mutually convenient. 'Forbidden relationship with student'