When bizarre and lethal entities begin raining from the skies, the entire world is pushed to the brink of collapse. Society faces an unprecedented crisis within Duty after School manga as the South Korean government realizes its regular military forces are entirely insufficient to fend off these extraterrestrial invaders. With civilian casualties mounting and survival hanging by a thread, high school and college students suddenly find themselves conscripted into mandatory military service. The transition from peaceful classrooms to brutal combat zones forces these young civilians to shoulder the horrifying burden of humanity’s last stand, turning everyday teenagers into frontline soldiers overnight.

The narrative centers on Kim Chi-yeol and his classmates at Sungjin High School, who are thrust out of their ordinary academic routines and straight into rigorous military training under the harsh supervision of Platoon Leader Lee Choon-ho. Instead of preparing for college entrance exams, these students must master firearms, tactical survival, and combat discipline while the sky above them remains a constant source of terror. As psychological pressure mounts and the reality of war sets in, the students struggle to maintain their humanity while facing terrifying aerial predators. Readers looking for complete series with high-stakes tension will find that tracking the latest chapters online offers a gripping look at teenage resilience under unimaginable duress.

If you are a fan of high-stakes survival thrillers and psychological drama, you should definitely check out Sweet Home, All of Us Are Dead, or Shotgun Boy. These grim sci-fi manga recommendations deliver the same intense atmosphere of ordinary people fighting against overwhelming, apocalyptic odds.

sci-fi manga, psychological drama, survival horror, military conscription, alien invasion, school setting, thriller, sci-fi action, seinen manga