New Haan pigeon

The protagonist, Yeoju, suffers from a rather serious illness. Because of this illness, she won't be able to remain in this world for long. While Yeoju herself doesn't know this, her best friend, Taehyung, knows. However, Taehyung pretends not to know, for Yeoju's sake. Then one day, Yeoju learns a horrifying truth and is devastated. Taehyung offers his comfort, but what will become of their fate?