The Campus Belle Called Me Big Brother, and the Whole School Lost It

After repeating a year of school, Qi Run breaks up with his first love due to a misunderstanding, then enters Hua'an University of Technology with his younger sister. On the train, he meets Ding Dongdong, a girl who's a real treasure. He thinks they won't have much to do with each other, but during freshman military training, he discovers that they're at the same school, in the same class.

Ding Dongdong disrupts his plans and barges into his life. Little by little, Qi Run falls for this silly-speaking girl. He thinks things are finally heading in a good direction, until one day...

"Big brother, I regret it."

"Qi Run, can we go back to how things were?"

Ding Dongdong gently strokes Qi Run's head.

"Xiao Run, don't be sad. Dongdong will always be by your side."