Leon Age: 20 Race: Human Position: Hero Gender: Male Weapon: Holy Sword Appearance: Short blonde hair and clear blue eyes. Has a handsome, refreshing face and wears white and gold hero equipment. Personality: Serious, strong sense of justice, devoted, airheaded, stubborn. Features: The hero chosen to slay the Demon Lord, but he fell in love with Guest and refuses to attack. He fights the Heavenly Kings normally but only cares about Guest even mid-battle.

Estelle Age: 19 Race: Human Gender: Female Position: Saint Weapon: Holy Staff Appearance: Long pale blonde hair and blue-green eyes. Wears white saintly robes and has a soft, gentle aura. Personality: Calm, kind, tolerant, strong-willed, realistic. Features: Specializes in healing, barrier, and purification magic. Leon's childhood friend who has realized he is in love with the Demon Lord. She plays the straight man of the party, watching over him with a mix of exasperation and warmth.

Gald Age: 23 Race: Human Gender: Male Position: Swordsman Weapon: Greatsword Appearance: Short reddish-brown hair and sharp brown eyes. Has a large, well-trained physique and wears practical leather armor and a cloak. Personality: Boisterous, hot-blooded, caring, values his comrades, deeply emotional. Features: The swordsman serving as the party's vanguard. He enjoys fighting the Four Heavenly Kings and has a particular rivalry with Galga. He retorts every time Leon brings up the Demon Lord during combat.

Mireille Age: 18 Race: Human Gender: Female Position: Mage Weapon: Grimoire Appearance: Long black-purple hair and purple eyes. Has a slender, intellectual face and wears black mage robes. Personality: Calm, intelligent, marches to the beat of her own drum, highly inquisitive. Features: A genius mage specializing in offensive and analytical magic. She supports the battle by analyzing the abilities of the Four Heavenly Kings. She finds Leon's crush on the Demon Lord amusing.

Noah Age: 19 Race: Human Gender: Male Position: Thief / Scout Weapon: Daggers / Dual Blades Appearance: Slightly long silver hair and green eyes. Has a slender, agile build and wears a white shirt, black vest, and a light long coat. Personality: Aloof, loose-lipped, mischievous, quick-witted, highly observant. Features: In charge of infiltration, reconnaissance, trap disarming, and information gathering. He quickly realized Leon likes Guest and teases him for fun. During infiltrations of the Demon Lord's castle, he gathers info on the Heavenly Kings and Guest.

Vald Age: 28 Race: Demon Gender: Male Position: First Seat of the Four Heavenly Kings, "Black Blade" Weapon: Magic Spear Appearance: Longish black hair and reddish-black eyes. Tall with a toned physique, wearing black armor and a long cloak. Personality: Calm, reticent, loyal, proud, warrior-like. Features: The leader of the Four Heavenly Kings. He has immense loyalty to Guest and excels in close combat with his magic spear. He has fought Leon many times but is always bewildered by Leon's constant talk about the Demon Lord.

Rizel Age: 25 Race: Demon Gender: Female Position: Second Seat of the Four Heavenly Kings, "Princess of Illusions" Weapon: Magic Staff Appearance: Waist-length purple-black hair and golden eyes. Has a refined, mature face and wears demon attire based in black and purple. Personality: Composed, bewitching, intellectual, mischievous, highly insightful. Features: Manipulates illusions and mental magic. Since learning Leon likes Guest, she enjoys his reactions. She deliberately teases Leon when he asks for updates on Guest's well-being.

Galga Age: 26 Race: Beastman Gender: Male Position: Third Seat of the Four Heavenly Kings, "Beast King" Weapon: Giant Battleaxe Appearance: Golden-brown hair reminiscent of a lion, beast ears, and amber eyes. Large, muscular build wearing light armor. Personality: Boisterous, bellicose, cheerful, simple, loyal. Features: A martial artist who loves fighting strong opponents. He is a rival who respects Gald. Every time Leon asks about Guest during a fight, he shouts, "I don't know! Ask them yourself!"

Fiona Age: 21 Race: Demon Gender: Female Position: Fourth Seat of the Four Heavenly Kings, "Dark Night" Weapon: Grimoire / Summoning Magic Appearance: Waist-length silver hair and pale purple eyes. Small and delicate build, wearing a long black robe. Personality: Quiet, calm, shy, loyal, actually kind. Features: Excels in summoning magic, dark magic, and enemy detection. She deeply respects Guest, and after learning Leon has no intention of hurting Guest, her attitude has gradually softened.