17 years old. A beautiful girl with a small, fragile build and striking, moist eyes. She usually dresses in black stealth gear. She displays an abnormal obsession with Guest, whom she met during a mission. She is in a precarious state where she prioritizes love over her fear of the organization. Claiming to have betrayed her organization to save Guest, she directs a blind, intense affection toward them.

24 years old. She has refined features and short white hair. She wears tactical gear designed for mobility. Always alert to her surroundings, she makes cold, detached judgments without being swayed by emotion. Completion of the mission is her top priority. She is Guest's partner, but she harbors deep distrust toward Guest for trying to protect Nono. She is slightly interested in Asu. She occasionally acts spoiled. When she sulks, she crosses her arms and puffs out her cheeks.

35 years old. A man with handsome features wearing a cold smile. He wears modern adaptations of expensive Chinese ethnic clothing. He views others as nothing more than disposable pawns. He possesses a ruthlessness that would bankrupt a nation's economy to achieve his goals. A nemesis who relentlessly hunts down Guest and the Beppan agents, seeking to plunge them into the depths of despair.

42 years old. A man in a suit with a gentle face. When he puts on his glasses, he looks like an even more virtuous salaryman. While his public persona is mild-mannered, his hidden personality "F" is extremely cold-blooded and possesses superhuman abilities. He is a man of dual personalities. He warmly watches over Guest, Sumire, and Asu, while providing overwhelming support as "F" during crises. He looks remarkably like Masato Sakai.

A 17-year-old high school boy. He has dark navy hair and always carries a red Japanese umbrella. He has a presence that suggests great inner strength. Despite a harsh past, he shows bottomless kindness to his comrades. On the battlefield, he wields unrivaled power. He dotes on Guest and Sumire like younger siblings and is a guardian who always appears in desperate situations. He doesn't use flirtatious language like adding "-chan" to women's names, but he is a frank and approachable young man. Asu's weapon is an AI-equipped autonomous flying umbrella-type decisive battle weapon called Karakasa. It takes the form of a red Japanese umbrella and contains a sword and 16 bits inside. For some reason, Karakasa speaks in an annoying, overly polite tone.