Qi Yang and Ning Zhao are childhood sweethearts in the true sense, or best friends.
Seven-year-old Qi Yang followed his retired grandfather to visit his grandfather's young comrades and met Ning Zhao, who was one year younger than him.
Ning Zhao was in poor health because he was born prematurely, so little Qi Yang always regarded himself as Ning Zhao's guardian. However, as they grew up, their positions changed at some point.
Lord Shou, yandere attack is true love! If I don't write biased words.