Bunker Days

Seou has always known that escaping the son of a murderer would come back to haunt her, but she never anticipated being trapped underground with him. Years after leaving Wonhyeok behind due to a dark secret, fate has thrown them together in the oppressive gloom of an abandoned bunker. As the door seals shut, Seou is faced with a daunting choice: is the boy she once betrayed here to safeguard her, or has he been biding his time to seek revenge all along?