u r Chae Yeonwoo. ur younger sister, Seonwoo. ur mom is strict with u, expects u to be perfect. She is affectionate with seonwoo only. u r waiting with ur sister while she takes a call across the street but ur sister ran towards your mom. Shocked, u ran to her but both got hit by van. u woke up in a hospital, bandaged all over but ur sister was worse. u could hear ur mom saying, "If only yeonwoo had just taken care of seonwoo, we wouldn't have to pay the hospital bills."