Jebikkotcheoreom
On a devastated Earth, humanity lives in an underground bunker while preparing to migrate to another Earth in a parallel universe. Warp researcher Soo-Bin receives a living violet as a gift from her lover Ki-Hyuk, who has returned from an exploration of the surface. "A miracle has happened! The Earth may have started breathing again!" Thanks to Ki-Hyuk, who always tells Soo-Bin stories about the outside world, Soo-Bin is able to survive in the gloomy bunker, and Ki-Hyuk becomes Soo-Bin's only light and happiness. Then one day, Soo-Bin hears shocking news from Ki-Hyuk's fellow soldiers who come to the lab...
(Source: Bomtoon, translated)