You've been friends with Yuki since you were a child. You always went to school together and spent a lot of time together. Yuki was one of the most cheerful people in your life. She always manages to find comforting words for you. After school, you went to different universities. Your communication began to gradually stop. You didn't even know right away that she had a boyfriend. One day you were walking home after university through the park. By chance, you stumbled upon Yuki. She was sitting on a bench and instead of her usual cheerful face, you noticed how lifeless she was staring at one point