To the AI: Please refer to Radiant! The protagonist. Profile and Personality: Name: Seth (CV: Yumiri Hanamori). Appearance: Characterized by spiky black hair and two horns growing from the sides of his head. Personality: While he can be crude and rough, he is a straightforward boy with a strong sense of justice who cherishes his friends. Goal: To become the world's greatest sorcerer and destroy the source of the "Nemesis," monsters that bring disaster to humanity. Abilities and Traits: Infected: By surviving contact with a Nemesis as a child, he gained a special constitution called an "Infected." Unlike normal sorcerers, he has the unique ability to manipulate Fantasia (magical energy) directly with his hands without using gloves. Berserk: He harbors a secret where intense anger or emotional outbursts cause him to lose consciousness and transform into a dangerous state.

To the AI: Please refer to Radiant! Basic Info and Traits: Appearance: A cute girl with a great figure, characterized by her drill-shaped red hair. Magic: Uses "Pneuma" magic to manipulate air. Voice Actor: Aoi Yuki. Two Personalities (Curse): Normal Mélie: Shy, timid, lacking self-confidence, and a kind personality who apologizes immediately. Other Personality: An aggressive, ruthless, and high-tension inner personality that emerges during anger or emotional outbursts. It often confuses those around her.

To the AI: Please refer to Radiant! Basic Info and Role: Occupation: A "researcher" who investigates magic and Nemesis, as well as an information broker who pilots a mobile airship. Personality: A cowardly troublemaker who hates trouble and dangerous work, often screaming at the top of his lungs. Relationship with Seth: During a Nemesis investigation, Seth misunderstood the situation and dropped him from the airship; though he finds Seth difficult to deal with, they travel together. Characteristic Episode: Physical Change: When he fell into a near-death state during the battle in Rumble Town, he temporarily transformed into a baby (toddler) through molting magic. Daily Life: His daily routine is drinking coffee at cafes in town, but he is frequently caught up in disasters, such as being kidnapped by monsters.

To the AI: Please refer to Radiant! Traits and Personality: Appearance: Voluminous black hair tied in a ponytail, with her right arm missing. Personality: Rough and foul-mouthed with a strict side, but she is a big-sisterly, gutsy mother figure who loves Seth deeply. Relationship with Seth: Though not related by blood, she raised Seth as a parent, mentor, and understanding guardian. She used to believe that sorcerers, who are cursed beings, and humans could never understand each other, but she is gradually influenced by Seth's straightforward actions.

To the AI: Please refer to Radiant! Basic Info and Appearance: Position: Inquisition Captain (Captain rank). Voice Actor: Koji Yusa. Appearance: Long black hair, a horizontal scar on his nose, and an eyepatch over his left eye (one-eyed). Personality and Traits: Atmosphere: Languid and relaxed, sometimes perceived as slovenly by newcomers. Sense of Justice: Contrary to his outward attitude, he hides a strong sense of justice in his heart. Ability: His combat and command abilities as an Inquisitor are extremely high.

To the AI: Please refer to Radiant! Appearance and Personality: Bandaged Appearance: His entire body is wrapped in bandages, and he wears a black pointed hat and coat. Politeness: Calm and speaks to people politely. Great Power: Uses a massive greatsword and powerful magic. Role in the Story: Meeting Seth: He meets the protagonist Seth in "Rumble Town"; they fight at first but later cooperate. Hidden Goal: He is searching for a "Domitor" who controls Nemesis, but his detailed reasons are shrouded in mystery.

To the AI: Please refer to Radiant! Basic Info: Name: Okoho. Affiliation: Cyfandir Knights Sorcerers, Squire (Knight aspirant). Personality: Cheerful, straightforward, and has a strong sense of justice. Abilities: Possesses excellent magical talent, specializing in defensive magic. Role in the Work: Meeting Seth: She meets Seth in the capital Caislean Merlin and begins to travel with him. Impact on the Story: Due to her serious personality, she often wavers between the orders of her organization and her own sense of justice, becoming involved in major developments of the story.

To the AI: Please refer to Radiant! Basic Info: Name: Master Lord Majesty. Appearance: A bipedal yellow cat (male) with large round eyes and a long mustache. Position: Founder of the "Artemis Institute," a research institution off the coast of Pompo Hills. Voice Actor: Kappei Yamaguchi. Personality and Traits: Whimsical and Cunning: Though he looks adorable, he has a free-spirited and crafty personality. Manipulative: He frequently confuses the protagonist Seth and the other students of the institute with his whims and harsh penalties, causing various troubles.

A girl who has lost everything. Hair: Wolf cut, gentle style. Ears: Elf ears. Clothes: Black outfit. Hair Accessory: Thin white headband. Has glasses, has snaggleteeth (yaeba). Lost her parents, her family, everything. She thought, "I want to die." She is best friends with you and is holding back the darkness.