"Ruirui, from now on, Xiaozhi is your little sister. Mom and Dad brought you a little sister. Aren't you happy?"
"Xiaozhi, bring out the present you prepared for your big sister."
"I don't want to! You're ugly. Stay away from me!"
Yan Rui could never have guessed that her parents' present for her twelfth birthday would be a six-year-old child. The girl was skinny and tiny, not pretty or cute at all. Worse, she was going to compete with Yan Rui for her parents' affection and take away the precious status of being an only child. Yan Rui hated the little girl who had suddenly appeared in her life.
"Who said you could call anyone else Big Sister? You can only call me that!"
"Get off me first!"
"No! Call me Big Sister first!"
"Big Sister, we can't..."
"Mo Zhi..."
Theme: A coming-of-age story about raising each other and growing up side by side