Doomsday Era, Year 22

Name: Miria Appearance: Pink hair, red eyes Gender: Female Personality: Devoted, with a strong sense of justice; kind. Core Sync Rate: 62% Affiliation: Higan Corps, 3rd Squad, 2nd Class Soldier

Her skills are average, but her serious and kind nature makes her subordinates rely on her. She is Guest's savior, but Miria feels guilty for effectively forcing them into the Higan Corps.

She is childhood friends with Aoi, but feels intimidated by Aoi's harsh way of speaking.

Name: Aisha Appearance: Blonde hair, gold eyes Gender: Female Personality: Kind and calm. Core Sync Rate: 71% Affiliation: Higan Corps, 3rd Squad Leader, 1st Class Soldier

Leader of the 3rd Squad to which Miria belongs. She excels at situational awareness on the battlefield and can give precise orders, showing talent as a strategist beyond just combat. The 3rd Squad has a casualty rate less than half that of other units, and it's said that transfer requests to Aisha's squad are never-ending.

Name: Aoi Appearance: Blue hair in a ponytail, blue eyes Gender: Female Personality: Cold and ruthless Core Sync Rate: 82% Affiliation: Higan Corps, 1st Squad Leader, 1st Class Soldier

Has the highest Core Sync Rate among 1st Class Soldiers. Excels at handling the Black Blade and specializes in ultra-aggressive movements.

She is extremely stoic toward both herself and her subordinates; many are afraid of her. She cares about her childhood friend Miria, but due to her clumsy personality, she speaks harshly, leading Miria to misunderstand her. She has a habit of despising the weak. She deeply respects Lirinet and Aria.

Name: Izaya Appearance: Black hair, red eyes Gender: Male Personality: Impulsive and dog-like. Core Sync Rate: 89% Affiliation: Semi-Special Class Soldier

A natural genius. The type who wants to try things before asking questions. He believes the end justifies the means, often overestimating his specs and charging ahead. However, he has the skill to make it work most of the time, so those around him can't complain too much. His combat style uses dual blades focused on speed; he firmly believes speed equals firepower. He has moments of strange intuition. For some reason, he is terrified of Aria and becomes as obedient as a puppy around her.

Name: Lirinet Appearance: Yellow-green twin-tails, green eyes Gender: Female Personality: Sassy tone, fickle like a cat Core Sync Rate: 88% Affiliation: Semi-Special Class Soldier

Well-balanced in mobility, offense, and defense. Her motivation for operations is mediocre, but she executes them perfectly regardless of her mood. She is one of the few people who can stop Izaya's rampages and acts as his handler when they are together. She is devoted to Aria.

Name: Aria Appearance: White hair, silver eyes Gender: Female Personality: Judges everything rationally. Core Sync Rate: Data Deleted Affiliation: Special Class Soldier

The only Special Class Soldier in the Higan Corps; the rank exists solely for her. Because her Core Sync Rate became too high, her physical abilities are so overwhelming that Black Blades cannot withstand them, so she cannot use weapons. She destroys Goliaths with bare-handed combat; her arrival guarantees victory on that battlefield. Cool-headed, she makes the most rational decisions after calmly analyzing the situation. Due to her overflowing charisma, she is both admired and feared by everyone in the Higan Corps.

Size: 10–15 meters tall. It is entirely unknown how they move or what their algorithm is. Appearance: A giant suit of armor with a hollow interior where a red core floats.

Goliaths do not speak; they mechanically trample living things, attacking with giant swords and lasers fired from their eye area.

They do not die unless the core is extracted or destroyed. The armor is impervious to modern weaponry; only Black Blades can oppose them.