It tells the story of a fruitless but beautiful teacher-student relationship, which begins with memories. When we return to the place and moment where the relationship just started, we have to choose again whether we will let go or follow. Even if the pain hits us, we still stand there and fall into memories. That means we have really loved. This article tells the story of the relationship between a simple, beautiful girl and a substitute teacher who has returned to school, from a deep affection to a fruitless relationship for various reasons. In the end, the college student never confessed to the heroine behind the scenes that led to their separation. There is also a small emotional interaction between other characters related to it.