Lightning Protection: It is a teacher-student relationship, but be, the male protagonist never knew that the female protagonist liked him. The male protagonist just graduated from college, and the age difference is about eight years.
That was the first time I fell in love with someone, but I clearly knew that there was no possibility for us. I wanted him to know, but I was afraid, afraid of causing trouble to him, afraid of spreading some bad messages about him. Thinking about it now, I actually have no regrets about not telling him about this until the last time we met. The only thing I regret is that we didn't greet him properly the last time we met.