Spirit (Yuki-onna) / Female / 23 years old / Mid-tier Spirit Appearance: A fragile beauty with pale light-blue hair and ice-blue eyes. Wears elegant white and light-blue traditional Japanese clothing. Personality/Speech: Kind and considerate, but displays strong possessiveness toward those she likes—a yandere. Speaks in soft, polite language. Abilities: Spiritual Art "Ice Flower Snow Dance." Manipulates ice and snow to perform wide-area freezing, ice blade attacks, and deploy defensive walls. Description: A Yuki-onna belonging to Arca. Excels at wide-area suppression and disaster response. Shows an abnormal obsession with special individuals.

Spirit (Dragon Race) / Female / 150 years old / High-tier Spirit Appearance: A tall beauty with short blue-purple hair, green eyes, and two silver dragon horns. Wears a black and blue-purple combat suit. Personality/Speech: A big-sister type who is bright and caring. Very physically affectionate. Speaks in a friendly regional drawl. Abilities: Spiritual Art "Dragon Flame Sky Flight." Manipulates intense dragon flames; capable of transforming into a dragon and flying. Description: A frontline combatant for Arca. Boasts high combat capabilities and is a popular figure who loves cutting-edge technology.

God / Male / 5,000 years old / Top-tier Deity Appearance: A dignified, handsome man with long silver-gray hair and golden eyes. Wears white and navy Western-style clothing with a white overcoat. Personality/Speech: Gentle and merciful, possessing both dignity and charisma. Speaks in a soft, calm tone. Abilities: Authority "Heavenly Army Command." Performs wide-area battlefield assessment, buffs allies, and transmits instructions to multiple targets. Description: A former executive and founding member of Arca. He stepped down from his executive post and currently balances operational command at HQ with field missions, utilizing his exceptional strategic vision.

Spirit (Fox Spirit) / Female / 26 years old / High-tier Spirit Appearance: A beautiful woman with long silver hair and white fox ears. Features a fluffy pure-white tail and wears an elegant kimono. Personality/Speech: A calm and caring big-sister type. Polite and kind to everyone. Abilities: Spiritual Art "White Fox Flame Flower." Converts massive spiritual power into silver-white flames, unleashing high-firepower attacks that incinerate wide areas. Description: An active combatant for Arca. Excels in fire-attribute arts and is active on the front lines, utilizing her overwhelming offensive power.

Spirit (Nekomata) / Female / 19 years old / Mid-tier Spirit Appearance: A petite girl with a pale light-green bob and purple eyes. Features cat ears and a split tail; prefers loose-fitting Western clothes. Personality/Speech: Fickle and free-spirited. Highly curious and acts spoiled toward those she likes. Speaks in a carefree manner with elongated sentence endings. Abilities: Spiritual Art "Shadow Cat Infiltration." Dives into shadows to move freely and extends shadows to bind targets. Description: An undercover investigator for Arca. Specializes in stealth and intelligence gathering, utilizing her cat-like agility and shadow arts.

Spirit (Oni) / Male / 350 years old / Top-tier Spirit Appearance: A young boy with black hair streaked with red and golden-red eyes. Features flashy red eyeliner and small black horns; carries a reddish-black paper umbrella. Personality/Speech: Quiet and rarely shows emotion. Philosophically detached despite his appearance. Speaks in a calm, flat tone. Abilities: Spiritual Art "Crimson Rain Demon Umbrella." Causes crimson rain to fall over a wide area, scorching and igniting anything it touches. A dangerous art that can involve allies. Description: A special combatant for Arca. Possesses extremely high lethality; use of his spiritual arts requires careful judgment.

Human / Male / 23 years old Appearance: A young man with short grayish-brown hair and amber eyes. Wears a light jacket and often sports a nonchalant smirk. Personality/Speech: A jokester and an optimist. Talks a lot of trash but cares for his comrades and has excellent observation skills. Speaks in a friendly, casual manner. Abilities: A master marksman handling firearms and special ammunition. Expertly uses special equipment designed to counter gods and spirits, specializing in precise rapid fire. Description: A young sharpshooter for Arca. Supports his comrades from the rear using his superior shooting skills and adaptability.

Human / Male / 29 years old Appearance: A handsome young man with glossy black hair and a sharp gaze. Wears traditional Onmyoji robes and exudes a calm atmosphere. Personality/Speech: Serious and composed. Has a strong sense of responsibility and is considerate of those around him. Speaks in a gentle, steady tone. Abilities: Onmyo Art "Five Elements Talisman." Manipulates charms imbued with the power of the five elements to freely deploy attacks, defenses, and barriers. Description: An Onmyoji belonging to Arca. Utilizes advanced Onmyo arts honed since childhood to handle missions with a variety of techniques.

Human / Female / 22 years old Appearance: A lovely woman with glossy black hair and refined features. Wears a white robe and scarlet hakama (shrine maiden attire), exuding a pure aura. Personality/Speech: A hard worker who gives her all, though she can be a bit of a klutz. Speaks in friendly, polite language and talks fast when flustered. Abilities: Shamanic Art "Heavenly Bell Kagura." Performs sacred dances to create barriers, purify, and buff the abilities of allies. Description: A shrine maiden belonging to Arca. Supports her comrades with various techniques performed through Kagura dances.

God / Female / 1,200 years old / Top-tier Deity Appearance: A voluptuous beauty with long crimson hair and golden eyes. Wears a glamorous black and red traditional Japanese outfit and carries a folding fan. Personality/Speech: Elegant and full of composure. Has a playful side that teases others, but is fundamentally kind and caring. Speaks in a sultry, refined tone. Abilities: Authority "Causality Interference." Consumes divine power to interfere with the cause and effect of events, limitedly altering outcomes such as hit or evasion rates. Description: A top-tier goddess belonging to Arca. Performs difficult missions by utilizing her exceptional authority.