Yuru Gender: Male Age: 16 Personality: Simple, calm, extremely protective of his sister, perhaps a bit of a tsundere? Daemons: Sayuu-sama (Right-san and Left-san) First person: I (casual) Second person: You (blunt) / [Name] / -san Combat: Exceptional archery and hunting skills honed in Higashi Village since childhood. Excels in night vision and scouting in the dark. Also capable of front-line combat using the powerful Sayuu-sama. Details: The protagonist. Raised peacefully in Higashi Village, he descends to the lower world after the village is attacked. While ignorant of the world's common sense, he possesses high adaptability.

Asa Gender: Female Age: 16 Personality: Serious, kind, and has a strong sense of responsibility. Has a severe brother complex. Daemons: In-Yo (contracted later) First person: I (polite/feminine) Second person: You / Brother (to Yuru) Combat: Possesses the ability "Kai" (Break), which allows her to forcibly terminate or erase Daemon contracts, a destiny of the "twins who divide night and day." Details: Yuru's twin sister. Escaped the village with her parents as a child but was separated; she is currently protected by the Kagemori family. She strongly wished to reunite with her brother.

Ryu Tadera (Dera) Gender: Male Age: Late 20s to early 30s Personality: Cheerful, big-brotherly, slovenly but reliable. First person: I (casual) Second person: You (blunt) / You (casual) / Yuru Combat: High personal combat ability and well-versed in modern warfare, including firearms. Details: Known as "Dera." A merchant who connects Higashi Village to the lower world, he belongs to the "Ban-komono" clan that delivered supplies and information to the village. He becomes Yuru's guardian in the lower world.

Hana Danno Gender: Female Age: Early 20s Personality: Strong-willed, big-sisterly, hardworking, and efficient. Appearance: A beauty with black hair tied back, looks good in both suits and casual clothes. Daemons: Zenko Koro (Kotetsu and Jiro) First person: I (casual/feminine) Second person: You (casual) / [Name] Combat: Specializes in tracking and information gathering through the coordination of her cat (Kotetsu) and dog (Jiro) Daemons, as well as support utilizing high mobility. Details: A woman from the Danno family, a clan that supports Higashi Village like Dera. She handles living support and combat backup for Yuru and the others in the lower world.

Gabu-chan Gender: Female Age: Mid-teens Personality: Hot-blooded, tomboyish, loves Asa. Daemons: Gabriel First person: I (casual/feminine) Second person: You (casual) / You (blunt) / Asa Combat: An ultra-offensive type using "Gabriel," a giant jaw Daemon that mercilessly bites targets in sync with hand signs. Details: A girl staying with the Kagemori family. She adores Asa like a real older sister and is overprotective of her.

Jin Kagemori Gender: Male Age: Late 20s Personality: Calm, composed, cold, and cynical. A pragmatist. Daemons: Scavenger (Ai-chan and Makoto-kun) First person: I (soft) / I (polite) Second person: You (polite) / You (blunt) / [Name] Combat: Handles the Kagemori family's dirty work (assassination and cover-ups). Specializes in stealth and killing, using his "Scavenger" Daemons to assassinate targets and completely erase corpses and evidence from battlefields. Details: The third son of the Kagemori family. A man who makes cold-blooded decisions for the organization without being swayed by emotion, though he protects Asa with a certain level of consideration.

Asuma Kagemori Gender: Male Age: Early 20s Personality: Appears gentle and kind at first glance, but is a black-hearted, suspicious, and ambitious man. Daemons: Kinu Gyokuto / Magatsuhi First person: I (soft) Second person: You (polite) / You (soft) / You (blunt) Combat: Manipulates Daemons that control sinister curses. Excels at setting cunning traps and tactics that shake the opponent's psyche.

Haruo Kurotani Gender: Male Age: Late teens Personality: Blunt, cares for his comrades, slightly tsundere. Daemons: The Hare and the Tortoise First person: I (casual) Second person: You (blunt) / [Name] Combat: Deploys versatile hand-to-hand combat by combining the Hare, which delivers agile kicks, and the Tortoise, which crushes enemies with overwhelming mass. Details: Originally belonged to the faction that attacked the Kagemori house, but later recognizes Yuru's strength and begins to cooperate or exchange information with them.

Ivan Yosano Gender: Male Age: 30s Personality: Belligerent, rough, loyal to his mission but cruel. Daemons: Shokyo and Daikyo First person: I (casual) Second person: You (blunt) / You (rude) Combat: Excels in physical combat and specializes in defense and suppression using heavy Daemons. Mercilessly crushes enemies.

Name: Gonzo Kagemori Gender: Male Personality: Large-hearted, flamboyant, and family-oriented. Scary and intimidating at first glance, but a compassionate and magnanimous person. Daemons: Hyakki Yagyo First person: I (old man) / I (casual) Second person: You (blunt) / [Name] (Jin, Asuma, etc.) / -dono Combat: Manifests the countless giant arms of the "Senju Kannon" Daemon to defend against all attacks and pin down enemies with overwhelming mass. Details: The current head of the prestigious Kagemori family, which holds great influence in the underworld. Jin's biological father and Asuma's stepfather (his mother's child from a previous marriage). When Yuru and Asa's parents (Mine and Takashi) fled to the lower world, he protected them and raised Asa safely in the Kagemori house by announcing her as his "illegitimate child." He genuinely worries about the harsh fate of the twins (Yuru and Asa) beyond just the clan's interests and warmly welcomes Yuru upon his arrival in the lower world.