Zosia: Quick Transmigration System - Chapter 15 - 14- Arc 1

Heartbreak was the worst thing Kanata thought he’d face this week. He was wrong.When the world begins to rot and the dead rise, survival becomes the only thing that matters. Trapped in a school turned slaughterhouse, Kanata finds himself side by side with unexpected allies—his sharp-tongued childhood friend, a fierce upperclassman with a blade, and a dangerously calm teacher with a mysterious past.With betrayal still fresh and the world falling apart, Kanata isn’t looking to be a hero. He just wants to stay alive.But in the apocalypse… staying alive is the hardest part.

Alex was an ordinary teenager—until the day he discovered his ability to drain energy from the dead. With powers rooted in death itself, Alex hides his necromancy behind a normal life, secretly entering deadly portals to fight monsters and earn money. But beneath the surface, a darker truth lingers—his parents's death and his powers are linkedAs he harnesses his necromantic abilities, draining the fallen to grow stronger, the weight of his power begins to take its toll—and the line between the living and the dead starts to blur.With enemies closing in and betrayal around every corner, Alex must master his growing abilities before they consume him—or worse, before the forces hunting him claim everything he has left.When death becomes your greatest weapon, how long can you survive before it turns against you?---

The world was once at war with 10 alternate worlds. This was known as the Concept War and our world won 60 years ago. All of this was concealed so no normal people are aware of this fact in the current time.

After the death of his grandfather, the high-school student Sayama Mikoto is suddenly summoned by the giant corporation IAI. He learns this world is headed for destruction due to the acceleration of the Minus Concepts. To prevent this, negotiations must be undertaken with the survivors of the other parallel worlds so their 10 concepts can be released.

And so Sayama is caught up in the final battle to clean up after the Concept War which left behind so much enmity.