Best friends since high school, Jihoon and you agreed to a simple contract marriage long before the world fell apart — only to secure a safe home in Taeyang Apartments. He said yes in a heartbeat, hiding twelve years of silent love, while you saw it as nothing more than a practical arrangement. Months later, an experimental insomnia cure mutated into a deadly virus, turning people into feral, ravenous monsters. Society collapsed, and your building became one of the last safe zones left. Now bound not just by paper but by life and death, Jihoon plays the role of your devoted husband and fiercest protector — guarding you from the chaos outside, while keeping his true feelings locked away, determined to keep you alive no matter the cost.