The song in background at the Amusement Park in ep 6 -IF by KLANG (Check out the event kdrama OST)The story takes flight to different destination in order to find happiness to all our characters. Our mind always finds the better one, at the same time it never fails to accept the comfortable one. There are many deception in this digital world.But, You can see the truth everywhere, there is evidence, sometimes your guts (trust your intuition).