She didn't know until her death that there was someone who had always loved her and wanted to avenge her like crazy after her death.
When they first met, he fell in love at first sight. The boy's love was warm and sensitive, and he was afraid that she would know, and he was also afraid that she would not know.
He plucked up the courage to confess, but it ended in failure. He was unwilling and regretful, but he saw her and the person she liked accompanying each other. He could only hide his love and walk away from home. He never thought that the last thing he would receive was the news of her death...