Päev, kui ma kadusin

When Yeon-yeon comes to her senses in a hospital room, she realizes with horror that she has been in a coma for eleven years. Her last memory is falling from the school roof and a shadow watching her. The girl... is sure that she was at her younger sister Sugyeon's graduation then. But it turns out that she had committed suicide, jumping from the same roof, a month earlier. Yet Yeon-yeon does not remember this – neither her sister's death nor what happened afterward. Up until her very fall... Finding herself completely alone in an unfamiliar world, the girl must uncover the truth about her sister's death. She is convinced – Sugyeon could not have jumped on her own; something bad surely happened to her. All the answers lie in that erased month after her death. Digging into the past, Yeon-yeon realizes that she did not truly know her sister at all. Sugyeon kept too many secrets that could still destroy more than one life...