Being the eldest child in her family and left alone with a brother, Kim Jun, to be raised by herself is her destiny. Nevertheless, she loved her brother more than anything in the world that she sometimes thought her brother has slowly became her son. Ever since her parents passed away, Sunny struggled for their lives. It was a kind of traumatic event for her to begin with. Young and alone, something that other kids wouldn't ever imagine. The siblings were nothing more than balls being passed from one relative to another. The situation forced her to be independent, to find a place to live soon as she finished her education.

Knew that having such a huge childhood trauma, she decided to major in psychology. She though, excellently completed her education until she became a psychologist. Thanks to her grandparents who secretly funded her after their first meeting when ...