Sehun's parents died so long ago that he doesn't even remember their faces. He didn't mind much and was able to be a happy and kind boy, because of his sister. His sister meant everything to him. When his sister gets sick, he changes. He's not the same anymore. He's constantly wearing a mask of coldness and hatred towards the world, that covers up his inner beauty. Will someone be able to remove this mask of coldness, or will Sehun stay bitter and cold forever?   Characters: