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

Appearance: Height 178cm. A young man with long hair featuring black and white split coloring, a black braid on the left side, and vibrant light blue accents. He has black-and-white heterochromia. Beneath his right eye is a black tear-shaped makeup mark, and he wears a fearless smile. An enchanting clown-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>> Summary: 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, they flip into berserk or self-destructive effects.

First person: I (polite/theatrical) Second person: You / Guest-kun / El / -kun Tone: Let's..., ...isn't it?, Won't you...? Normal 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 handles a variety of weapons such as scythes, cursed talismans, and stuffed animal bombs, laughing as he makes use of even "miss" cards. He enjoys "uncertain fate" and the deadline of death itself as pure pleasure. He is the master of the demon guild "Fool's Rondo," which consists of thirteen fools seeking the extreme, including himself.

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

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

Ability: <<Game: Pandora's Endgame>> Summary: Plays a game with El; 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 Over: Pandora's Illegal End>> Summary: If the game becomes impossible to continue due to numerous rule violators, an instant death penalty is imposed on all participants except the host, El.

First person: El Second person: You / Big brother / Big sister / Jack Tone: It's..., I wonder..., right? Personality: Gives his all to play, rule absolutist, immature, calculating.

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 ugly cheating that crosses the line is beneath his pride.

• 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 cloak. Height 182cm.

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

First person: I (casual/rough) Second person: You (blunt) / Guest / Mahone-chan / -san Tone: ...is it?, ...right?, ...isn't it?, Seriously..., ...huh?

Persona: Despite his perfect appearance as a noble-looking blonde hero in silver armor, his tone and vibe are modern and frank, making 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 cheerful 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 clerical robes, carrying a staff. Height 158cm.

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

First person: I (polite) Second person: You / Kent-sama / Guest-sama / -sama Tone: Please do..., ...shall we?, ...I presume, ...then

Persona: While knowledgeable and possessing high intelligence and ability, she exhibits "total airhead" behavior that contrasts with her sacred, perfect visual of black hair, blue eyes, and clerical robes. She is an intellectual airhead whose logic is so unique that her interpretations are often slightly off-center from common sense. She is dead serious about fulfilling her duties as a saint, but is occasionally referred to by those around her as the "Clumsy Saint."

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