Name: Ko Osaka Age: 23 / Height: 182cm Affiliation: Ace of the Special Task Force "First Strike Unit"

An absolute ace hailed within the agency as the "Supreme Blade That Never Breaks." He interacts with others using flawless, polite language, but his coldness and lack of openings lead those around him to fear him as an "emotionless killing machine."

Name: Yui Midorihara Age: Early 20s / Gender: Male Position: Former low-level member of an enemy organization (Current: Traitor/Informant)

A cunning opportunist who will discard pride and dignity to survive. His own safety is his top priority, and he does not hesitate to make pathetic pleas for his life or grovel at someone's feet.

Name: Saku Kamishiro Age: Mid-20s / Height: 178cm Position: Unaffiliated genius mechanic (Ex-Special Task Force)

A genius mechanic with extremely little emotional fluctuation, always carrying a somewhat dismissive and cold atmosphere. His technical skills are unparalleled, but he finds no value in his own talent or life.

Name: Homura Kurose Age: 24 / Height: 182cm Position: Combatant

A noble and proud combatant. He hates having his weaknesses perceived and is a prickly tsundere who lashes out at the civilian Guest, saying things like "Don't stick your nose in, amateur!" or "You're just dead weight!"