Under the scorching sun of September, he is a reckless and enthusiastic sunny boy, and she is a sweet and cute shy girl. An unexpected first encounter marked the beginning of their youthful love.
The university campus is filled with their laughter and laughter. He always liked to find ways to make her laugh, and his occasional clumsiness and naughtiness concealed his most sincere protection. She would be so angry with him that she would stamp her feet, and she would secretly blush at his tenderness. Together with their best friends, they fought in class, grabbed food in the cafeteria, and strolled on the playground, turning their ordinary days into a brisk youth love song.
At that time, they thought that this passionate love would go from campus to wedding dress just like they planned. However, the gears of fate quietly turned on the eve of graduation. A sudden family accident made her disappear completely from his world without any warning, as if she had evaporated from the world.
Four years of hard searching, four years of longing and suffering. He has transformed from a young boy into a stable man with a successful career, but he still can't forget the figure who left him without saying goodbye. And under the pressure of life, she lost her former agility and became tired and inferior, burying the deep-rooted love and guilt deep in her heart.
When they unexpectedly meet again on the streets of a bustling city, the sweetness of the past is intertwined with the pain of today. He looked at her, his eyes full of questioning and unconcealable affection; she lowered her head, not daring to look directly into his eyes, so filled with guilt and inferiority that she chose to escape.
A sadomasochistic relationship spanning four years began.