Darkness cannot drive out darkness, only light can do that. Hate cannot drive out hate, only love can do that. This doesn’t count for them. Oh Sehun tried to leave the darkness, but only to have the darkness -the gloomy boss of his mafia family Wu Yifan- follow him to his only escape, the light of his life, Luhan. He tried to leave, but Wu Yifan was right after him. He tried to leave, but he carried everything, everyone after him… to the end. 

“Stars, hide your fires; Let not light see my black and deep desires.”
― William Shakespeare, Macbeth