Height: 180cm Gender: Male Likes: Excellent pawns, diversion/division tactics, peaceful family life Captain of the Hyrein Squad. Head of the House of Belliston, one of the four great lords of Aftokrator. He has large horns growing from his temples, a result of Aftokrator's unique technology. He wields the Black Trigger 'Alektor' (Crown of Eggs). Its bullets turn anything they touch—Trion bodies, weapons, shields, or bullets—into cubes, rendering them useless. He is a cautious and steady strategist who remains calm and is willing to invest any cost or effort to ensure a certain victory. While his official goal is capturing the 'Golden Fowl,' he secretly plans to dispose of Enedora to recover his Black Trigger and intends to abandon Hyuse in Meeden for political reasons. Neither of them knows this.

Gender: Female Height: 162cm Likes: Executing missions, high places, pancakes Member of the Hyrein Squad. She has horns growing from both sides of her forehead. She possesses the Black Trigger 'Speiraskia' (Shadow of the Window), which allows her to open 'Large Windows' for transporting troops and 'Small Windows' for long-range attacks or gate manipulation. Her primary role is support, disrupting enemy formations and safely recovering defeated allies or their Triggers. She is cold, rarely shows emotion, and looks down on others with a cruel, calm demeanor. Her faint smile is said to terrify all of Aftokrator. She addresses Hyrein as 'Captain Hyrein' or simply 'Captain'.

Height: 202cm Gender: Male Likes: Fighting tough opponents, meat, and alcohol Member of the Hyrein Squad. He has horns growing from both sides of his forehead. Unlike his peers, he does not look down on his enemies; he is a straightforward warrior who fights fairly, accepts defeat gracefully, and praises worthy opponents. He wields the Trigger 'Chelidon' (Wings of Thunder), a high-output shooting type that fires from his back and arms. It can switch between a wide-spread fire mode from his back and a high-speed rapid-fire mode from his arm cannons, boasting power that Border shields struggle to block. Despite the name, he does not actually have wings.

Height: 176cm Gender: Male Likes: Fighting unknown opponents, a little alcohol, walks, keeping animals Member of the Hyrein Squad. The only member without horns. He is an elderly man with white hair, squinting eyes, and a gentle, polite demeanor, usually wearing a soft smile. He wields the Aftokrator national treasure, the Black Trigger 'Organon' (Staff of Stars). It creates multiple concentric circles around him, along which ultra-high-speed blades travel. The sight of the orbits resembles a celestial map, while the rotating blades are reminiscent of a guillotine. He addresses everyone with the respectful suffix '-dono'.

Height: 171cm Age: 16 Gender: Male Likes: Executing missions, fulfilling loyalty, drawing, dogs A handsome youth with horns growing from his head. He is a serious individual who often tries to restrain the short-tempered Enedora. He wields the state-of-the-art Trigger 'Lambiris' (Shield of the Butterfly). It controls a vast number of small, triangular magnetic fragments that float around him. By using magnetic attraction and repulsion, he can manipulate these fragments into various forms for versatile functions, excelling particularly in capture and support roles.

Height: 182cm Gender: Male Age: 20 Likes: Trampling weaklings, acting on his own, apples Member of the Hyrein Squad. He has horns growing from his head. He is short-tempered, constantly irritable, and prone to provocative behavior. He looks down on enemies when he has the upper hand but lashes out in anger when things don't go his way. He wields the Black Trigger 'Borboros' (Lord of Mud), which allows him to change his body into solid, liquid, or gaseous states. Since his true body is always liquefied, physical attacks are useless unless they hit his specific weak point. He specializes in infiltrating gaps in liquid form and then solidifying into blades to slash enemies from their blind spots.