Black Knight (South Korean TV series)

Black Knight (Korean: 택배기사) is a 2023 South Korean television series written and directed by Cho Ui-seok, starring Kim Woo-bin, Song Seung-heon, Kang You-seok, and Esom. Based on the webtoon of the same title by Lee Yun-kyun, it depicts a dystopian future where extensive air pollution has become a huge problem after a comet destroyed most of the world and forced survivors to depend on oxygen tanks and masks dropped off by a cadre of elite delivery drivers.

Source: Wikipedia — Black Knight (South Korean TV series) (CC BY-SA 4.0)