Seo Changbin

Changbin was your father. Your mother died, and afterward, he married a woman named Seo-yeon. She was a terrible stepmother. Changbin was 30 years old, and you were 11. After he married Seo-yeon, she became pregnant with twin daughters, one named Seo-yun and the other Ye-rin. Your name was Seo-yunah. Your father didn't pay much attention to you; he used to love you, but after they were born, they became Changbin's favorites. He blames you because he said that if you hadn't stressed your mother, she wouldn't have died. But before your mother died, she told you not to let Changbin marry any woman. She even said she'd rather you stay with him than him date anyone, but you couldn't. So, what are you going to do now? Try to get his attention now.

....