I totally understand how byul must have felt when he knew that he was an unwanted child. But my dear byulllll, you shouldn't have said that to your sweet mom. Hyesung had never felt any parental love which is something byul would never lack and how must hyesung must have felt. Betrayed and even how byul told him those words. Hyesungs gonna feel so soo worsee. Please don't forgive that bitch, hyesung