Neo-neun Na-ui Na-neun Neo-ui SuhocheonsaAnata wa Watashi no, Watashi wa Anata no Shugo Tenshi; You Are My Guardian Angel, I Am Yours; 貴方は私の、私は貴方の守護天使; You Are Mine, I Am Your Guardian Angel; 너는 나의 나는 너의 수호천사

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.