Duan Jiaxu and Sang Zhi became acquainted due to an incident at Sang Zhi's school that required parental involvement. Since then, Duan Jiaxu has treated Sang Zhi like his own younger sister with affection. As Duan Jiaxu graduated from university and the two were separated by distance, misunderstandings caused their relationship to grow distant. It wasn't until Sang Zhi, now an adult, successfully got into the same city's university as Duan Jiaxu that they were reunited. Through their increasingly close interactions, Sang Zhi gradually discovered the source of Duan Jiaxu's long-standing stress. She wanted to protect this kind-hearted...