"Have you ever heard about the origami hearts tradition in the hospital?" Taking the heart, the child excitedly inspected it, nodding in glee. "Yes! My mama told me that when someone leaves the hospital to go to heaven, we all fold a paper heart for them! Like this, like this!" "That's right," chuckled Soobin. "But do you know how it started? It started here, in this room. From a boy who used to fold a paper heart every day for his lost love, hoping each one he makes will take him closer to the day those eyes would open again." "Unfortunately for him, the day never came." In other words, a hopeless love story of two childhood best friends who didn't realise what it meant to have each other until it was too late; compiled of yearning, loss, forlorn hope, unrequited love, and every tragedy in between.