A lighthearted, fun story.
At seventeen, Jiang Mai picked up a brother. He was three days older than her, and everyone called him "Lu Zhishu of No. 1 High School," a boy straight out of a romantic drama.
But she had her reservations.
She thought there was something wrong with his head.
At seventeen, Lu Xiangheng discovered that the girl he had a crush on had become his little sister. On the first day she entered his home, he couldn't help saying, "Your sister!"
His mother patted him and corrected him: "She's your sister."
Theme: A good, loving relationship.