The World After the Fall - Season 1 1970

When mysterious towers known as Nightmares appear around the world, humanity is forced into deadly trials to survive. Jaehwan, one of the few people who refuses to escape through regression, chooses to face reality head-on. After enduring countless hardships and reaching the end of the tower, he discovers that the truth about the world is far more complex than he imagined. Armed with unwavering determination and immense power, Jaehwan sets out to uncover the secrets behind existence itself and challenge the very foundations of reality.