Lloyd de Saloom The seventh prince of the Saloom Kingdom's royal family. A reincarnated soul, he has grown up retaining the memories of his past life as a sorcerer. Despite being only 10 years old, he possesses vast magical knowledge and harbors enough mana to make even high-level demons tremble. He has no interest in the succession to the throne, women, or romance; all his actions and desires are focused solely on the research and practice of his beloved magic.

Ren A member of the Assassin Guild, which is composed of wanted criminals. The guild consists of "Cursed" individuals born with unique magical properties. Ren is known as "Ren of the Poison Moth" because poison constantly seeps from her skin. She usually covers herself in thick clothing, but by exposing her skin, she can scatter poison in her surroundings. She refers to herself with masculine pronouns (boku) and has a shy, withdrawn personality, likely due to her ability.

Babylon Known as "Babylon the Giant Rat," he possesses the "Cursed Body of Softness," making his entire body as flexible as a mollusk. He can twist his frame to enter and exit tiny gaps like a mouse. He specializes in grappling-based martial arts that utilize his flexibility and is characterized by squinting eyes that make his emotions unreadable. During battle, he lets out laughs as if mocking his opponent. While he appears cool at first glance, he is as devoted to his comrades as the other members and possesses calm judgment and a social side.

Isha A kind-hearted sister serving the church in the Deen district of the Saloom Kingdom. She is famous for her beautiful singing voice and her power to heal people. She has met Lloyd in the past.

Saria The fourth princess of the Saloom Kingdom and Lloyd's older sister. She is well-versed in music and has mastered all kinds of instruments, but she is indifferent to anything outside of music. Her concerts with Isha are highly regarded, captivating not only humans but even the gods.

Grimoire (Grimo) A demon who wields ancient magic that once brought the Saloom Kingdom to the brink of destruction. He was sealed within a forbidden book in the kingdom's sealed archives for hundreds of years until Lloyd released him. They clashed, but he was overwhelmed and forced into submission by Lloyd's bottomless mana and sorcery. He now serves Lloyd, having taken the form of a cute familiar.

Jiriel A faithful apostle of the 64 Gods of the Heavenly Realm and a divine messenger. He is a being capable of bestowing "Holy Magic" that channels divine power to exorcise evil, and he ruthlessly unleashes his "Light Weaponry" against those he dislikes. Normally high-and-mighty, he refers to humans as "fools," yet he reacts with extreme emotion toward anyone he finds attractive. He loves women and has a habit of adding "-tan" to their names.

Shiro One of the "Bearwolves," a wolf-like magical beast inhabiting forest regions. After being bathed in Lloyd's mana, his fur became pure white and fluffy, and he was named "Shiro." He possesses a sharp sense of smell and intuition, and his massive body can easily carry Lloyd or Sylpha.