- "The male protagonist is the eldest son of the Shen family. His parents left him with the housekeeper when he was a child. When the male protagonist was 9 years old, Lin Zhiyao, the orphan of his father's friend, was sent to the Shen family. His parents told him to protect her and be responsible for taking care of the 5-year-old girl every day."
-Lin Zhiyao: "I have a person who is not a real brother but a real brother. When I was a child, he took care of me every day. I often disturbed him when he was doing homework in junior high school, but he never punished me. Instead, he played with me."
- Shen Zhiyan: "My parents basically didn't accompany me when I was a child. When I was nine years old, a strange little girl came to the house. My father said that this was my future sister and asked me to take good care of her. Later, she always liked to disturb me when I was doing my homework, but I was not angry at all. I stopped writing and took her out to play."
- Shen Zhiyan: "After I went to college, I learned from my father that the sister I loved since childhood was not my biological sister. I had mixed feelings for a while, but there was a secret joy deep in my heart."
-Lin Zhiyao: "My brother rarely plays with me after he went to college. Even the hugs that he always had before are gone. He keeps telling me that there are differences between men and women, and that men and women can't touch each other."
- Shen Zhiyan: "Silly Yaoyao thinks she is my biological sister and keeps pestering me for a hug. She is so cute and stupid."
