Kindan wa Hatachi ni Natte Kara

Hinako leads a life that has been largely trouble-free, and she achieves her goal of becoming a teacher. However, her experience in this role does not meet others' expectations, and she struggles with difficult students, leaving her feeling isolated. One day, while sitting alone in the park, she is approached by a mysterious and attractive young man in his twenties. For the first time, she finds someone with whom she can open up and feel comforted. However, there is more to him than meets the eye. A relationship forms between them, though it is legally permissible but considered inappropriate.