You Are My Guardian Angel, I Am Yours

Sena was a young girl who was shunned by others because she "can see ghosts." However, her boyfriend Jiho was always by her side. One day, Sena is dumped by Jiho, and after Sena loses her will to live, she tries to end her life. At that moment, a mysterious boy with black and white wings who called himself "Guardian Angel" appeared before her.