In the face of love, different choices lead to completely different paths.
Different personalities, different environments, different ages, meeting each other is a chance encounter.
The main cp is a teacher-student romance (?), The situation of the sub-cp is different, please look at the main cp (it is slow to heat up, and the sub-cp may steal the spotlight, please pay attention to the main cp).
"Teacher, do you regret it? But if you regret it, you can't leave!"
"I'm no longer your teacher. If I want to leave, do you still want to force me to stay? You have stiffened your wings, huh?"
"I dare not, I dare not disobey my teacher's orders, but I dare not disobey my heart's orders."