The female protagonist met the male protagonist who was one year older than him after the first year of high school. She fell in love at first sight and pursued him fiercely. The distance in reality and the difference in the circle became his concerns, making him confused about his own mind and feelings. They missed each other again and again. It was only later that he no longer had the chance. He realized it later and regretted it. He never knew how much she loved him. The love letter he wrote was never sent out or signed.
Purpose: Cherish every moment and don't let time slip away in regrets