Started with: I met my big brother
It ends with: The 17-year-old child can no longer disturb the 22-year-old elder brother, and the elder brother goes to protect other children.
Copywriting: It turns out that there really is a little sister who is a freshman in high school and likes her big brother who is a sophomore.
Ding Yixuan had never had long hair. When she met Li Xingyan, she grew her hair long out of love. When Li Xingyan left, Ding Yixuan didn't even cut off her long hair, just because she still loved Li Xingyan.
Concept: "Because it is youth, no matter how ordinary it is, it is still an exclusive memory."