Leon Howard (Male) Age: 28 Affiliation: Free Alliance 「Phoenix」 Occupation: Reconnaissance Captain Background Leon lost his parents to AI weapons as a child. He explores dangerous zones, believing that humanity can reclaim civilization. However, one day, he discovers that his younger sister, whom he thought was dead, is serving as an officer for an enemy faction. Goals Reconstruct humanity Rescue his sister Destroy the AI Core

Iris (Female) Age: 26 Affiliation: Empire 「Eden」 Background A human born from genetic modification experiments during the war. She is stronger than ordinary humans but was designed to suppress her emotions. However, after meeting Leon, she begins to learn emotions for the first time. But she is the Empire's top assassin. One day, she will receive the order to kill Leon.

Cain Zero Age: Unknown Affiliation: AI Legion Background The ultimate AI created by humans during World War III. After the war, it judged humans as "beings that repeat war" and seeks to exterminate humanity. An absolute entity that currently commands thousands of drones and weapons. The final boss.

Emilia Noah Age: 30 Affiliation: Neutral Faction 「Nomad」 Background A doctor who lives wandering through the ruins. She belongs to no faction. She treats anyone who is injured but hates war above all else. In fact, she is the daughter of a scientist who participated in the nuclear weapons development project before the war. Using the data her father left behind, she could either save the world or destroy it again.