Three months after a virus that turns humans violent spread across the globe,

the dominant species on Earth shifted from humans to the infected.

The police and self-defense forces were decimated, and government agencies ceased to function.

Civilization collapsed, and while a handful of survivors lived in hiding,

a boy was surviving alone in a desolate city.

Evading the notice of the infected, he lived a reclusive life, confined to a single room.

However, his life would take a dramatic turn when he encountered a girl one day.

(Completed on 2025/5/26)