Bai Qie Hei Di Di De Lian Ai You Xi

After the wealthy Sheng family's fortunes decline, heiress Sheng Shu Ran remains engaged to Fu Lin, the eldest son of the Fu family, but becomes entangled with Chi Xin, the Fu family's illegitimate son. On the surface, Chi Xin is an obedient younger brother, but in reality, he is obsessive and unhinged, as well as the mysterious "Night Emperor" of SR Group. He carefully plans each step, exposing the ugly secrets of the Fu family. (Source: Chinese = 红果短剧 app || Translation = MyDramaList)