Even though I've been in many dark places in life, watching this drama made me uncomfortable. It delivers row emotions and situations that can drown you. Not easy content if you are NOT familiar with such emotions, so therefore I don't suggest that someone under 20s should watch this, or even older ... it can cause depression and for that reason someone can underrate it. However it's exceptional on its kind. Not many dramas can show the darkness of the soul that make you strangle you every day, the desperation, the loss, the fight with self to remain alive. The loneliness...