Li Moli, a patient with severe agoraphobia, just because she pulled the sleeve of a boy named Lin Xingxing during military training, does that guy rely on her to be her big brother? !
It's impossible to recognize Big Brother! Seeing how cute he is, she might consider becoming his eldest sister.
But...
If she fell in love with him, then it wouldn't matter if she called him brother!
Brother! Brother! I like you, brother!
Concept: Fear can be overcome, wounds can be healed, and love can be sweet forever.