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.
| Actor | Role |
|---|---|
 Chen Ting-zhiYu | Yu |
 Cai Hai-yinGuei | Guei |
 Wu Yi-jungMom (voice) | Mom (voice) |
 Calvin TsouBoy | Boy |