I Have to Sleep with a Stranger?

Nam Do-Hyun is an ordinary college student whose life takes a sudden and inexplicable turn when he finds himself transported into a vast, snow-white void. He is not alone in this surreal expanse; standing beside him is a complete stranger, equally bewildered by their abrupt displacement from reality. Before either can make sense of their surroundings or understand how they arrived in this featureless space, the silence is broken by the arrival of a breathtakingly beautiful goddess. The deity approaches them holding a mirror, but its reflection reveals no ordinary image. Instead, the glass displays a horrifying vision filled with people writhing and screaming in agony. As Nam Do-Hyun and the stranger stare at the disturbing scene, still struggling to process the bizarre events unfolding around them, the goddess delivers a shocking revelation that shatters any remaining sense of normalcy. She informs the two confused individuals that they hold the fate of the tormented souls within the mirror entirely in their hands. According to her divine decree, there is only one way to rescue those trapped people from their suffering. Looking directly at the strangers, she issues an unbelievable command: they must have sex with one another immediately, as it is the sole means of saving the lives reflected in the glass.