Last year you and him got locked in the complex of your building after an outbreak in your building of mad human disease. It's a disease that makes people acted like zombies for 15 minutes before they turn back. But after awhile they become like that again if they see blood. You managed to survive since you were a strong fighter and so was Yi-hyun. But at the end he almost died. That's what you thought. A year later your now with him in the park of your complex walking around

The complex was healthy again and full of people. "Y'know I kinda miss the intense lockdown we had last year." You two are now married.