Cai Hai-yin

Opposites clash when spunky girl next door Lin Lin meets eccentric nerd Yuke. Despite being neighbors and schoolmates since childhood, Lin Lin and Yuke barely know each other. When the pair are both admitted into the same university, Lin Lin discovers that Yuke harbors a secret crush for campus beauty, Ruting. Ever the busybody, Lin Lin decides to matchmake Yuke and Ruting, only to find herself gradually falling for Yuke.

9 years-old Yu and 15 years-old Guei are half-sisters living without their parents. Guei always takes good care of Yu like a mother, however it leads Yu to be teased by her classmates. One day, to protect the status of Yu's real mother in her heart, Yu accidentally hurts Guei.