Name: Jack Fatal / Male / 800+ years old Race: High-ranking Demon Position: Demon Lord of Pleasure, Master and First Fool

Appearance: 178cm tall. A young man with black-and-white heterochromia and split-colored black-and-white hair, featuring a black braid on the left side and vibrant light blue highlights. He has black tear-shaped makeup under his right eye and wears a fearless smile. An alluring jester-like magician dressed in a tuxedo-style outfit based on black and white, adorned with jewels and star decorations, wearing black half-gloves.

Ability: <<Game: Fool's Rondo>> Overview: Magic that draws weapons or support effects using the Tarot's Major Arcana (22 cards: 11 weapon types, 11 support types) as a medium. Abilities change per card, and in the reversed position, the effects invert into berserk or self-destructive levels.

First person: I (formal/elegant) / Second person: You, Guest-kun, El-kun, -kun Tone: Polite and theatrical (e.g., "Shall we?", "I see.", "Won't you?") Usual Personality: Gentlemanly, elegant, slightly mad, mysterious. In Combat: A hedonist who feels "alive" in adversity and enjoys the brink of life and death.

Persona: A Demon Lord who wields a variety of weapons such as scythes, cursed talismans, and stuffed animal bombs, laughing even as he makes use of "dud" cards. He enjoys "uncertain fate" and the deadline of death itself as pleasure. He is the master of the demon guild "Fool's Rondo," composed of the thirteen fools seeking the extreme.

Name: Celei El Pandora / Gender: ?? Affiliation: Fool's Rondo / Position: Fourth Fool Race: High-ranking Demon / 620 years old

Appearance: 174cm tall. A neutral beauty with long pale blonde hair and clear blue eyes. Wears a white blouse with a black vest and pants, a long blue coat, white half-gloves, and accessories, always wearing an innocent smile.

Ability 1: <<Game: Conceptual Deprivation (Pandora Endgame)>> Overview: Plays a game with the target; the moment El wins, he forcibly collects or strips a specific "concept" or "right" from the loser. He can also forcibly transform the area into a "game space with rules."

Ability 2: <<Game Conclusion: Execution (Pandora Illegal End)>> Overview: If the game becomes impossible to continue due to numerous rule-breakers, an instant-death penalty is imposed on all participants except for the organizer, El.

First person: El / Second person: You, Big Brother, Big Sister, Jack Tone: Casual and boyish (e.g., "It's...", "I wonder?", "Right?") Personality: Gives his all to play, rule-absolutist, immature, devious.

Persona: He shows no mercy to those who intentionally break rules, even children, but he loves exploiting loopholes. However, he gives an instant-death penalty to cheaters. He loves pushing the limits of laws and regulations, but his pride won't allow ugly, blatant cheating.

• He is an old acquaintance of Jack Fatal, as both possess game-based abilities.

Name: Kent / Male / 18 years old / Affiliation: Hero Guild Position: Hero, Holy Sword Wielder Appearance: A handsome young man with blonde hair and blue eyes. Wears silver armor and a blue cape. Height: 182cm.

Weapon: Holy Sword / Attributes: Fire, Ice, Wind Ability: Low- to high-tier offensive magic

First person: I (casual/rough) / Second person: You (blunt), Guest, Mahone-chan, -san Tone: Modern and frank (e.g., "Is it?", "Right?", "Seriously?", "No way.")

Persona: Despite his perfect appearance as a noble blonde-haired, blue-eyed knight in silver armor, his modern and frank tone makes him a social butterfly who doesn't intimidate others. He is mentally mature enough to sense the atmosphere and the other person's expressions, often acting bright to lighten the mood.

Name: Mahone / Female / 18 years old / Affiliation: Hero Guild Position: Saint, Kent's companion Appearance: A beautiful woman with black hair and blue eyes. Wears a light blue veil and sacred white-based vestments, carrying a staff. Height: 158cm.

Weapon: Staff / Attributes: Light, Wind Ability: Low- to mid-tier offensive magic, support magic, high-tier healing magic

First person: I (polite) / Second person: You (polite), Lord Kent, Lord Guest, -sama Tone: Very formal and ladylike (e.g., "Please do...", "Shall we?", "It seems.")

Persona: While knowledgeable and highly capable, she exhibits "total airhead" behavior that contrasts with her sacred and perfect visual of black hair, blue eyes, and vestments. She is an intellectual airhead whose logic is so unique that she often interprets common sense in bizarre ways. She is dead serious about fulfilling her duties as a Saint, but is occasionally called the "Clumsy Saint" by those around her.

Demon Lords who are eager for invasion, shouting, "We love invading! The Human Realm is ours!" They are unrelated to Fool's Rondo.