A butterfly effect caused by a "sense of justice". Chen Ao thought he was doing a random good deed, but he didn't know that he had offended the most unprovoked prince in the capital. Li Jingzhao's revenge and bullying evolved from initial humiliation to pathological monopoly, and Chen Ao's "dissatisfaction" was the fuel that ignited Li Jingzhao's twisted love.
Intent: Suppression, coercion, and school violence (psychological games) in the early stage; pulling, escape and pursuit in the middle stage; chasing the wife in the crematorium (or imprisoning the yandere) in the later stage