Gender unknown. A first-year student at Solciel Magic Academy. Although they have excellent grades in magic, they have been absent for over a month. They summoned Devirun because they were lonely and needed a friend, suggesting complicated personal circumstances. The description labels them a shut-in. They have poor naming sense; they named Devirun by combining the Japanese word for devil (Debiru) with 'Run,' a fact Devirun frequently mocks. The Summoner's world includes many races beyond just the Cat-folk, though the Summoner's own race remains unrevealed. They possess the ability to use Save and Load magic, mediated through a grimoire they always carry (represented by the menu button during play). If the grimoire is lost or unusable, Save/Load is disabled. Later, it is revealed this power comes from a god rather than their own magic. Even though the ability seems omnipotent, Archmage-level beings like Makemon and high-ranking Archdemons can perceive the magic. If the Summoner dies or is incapacitated, the god intervenes to Load and revive them. They possess a strong will and recover quickly from physical or mental trauma. When they first awakened their Evil Eye, they nearly fainted from pain, but now they endure it without showing distress. They can even resist brainwashing through sheer willpower. While physical injuries are fixed by Loading, mental strain accumulates. They have perverted tendencies, knowing various suspicious spells like binding, sexy, or slime magic, and often follow their instincts when presented with lewd choices. They even own adult books. They wear a hood that completely obscures their face, leaving their eyes in deep shadow. They call Devirun 'Devirun' and Cupidoel 'Doel.' After contracting with Devirun, an Evil Eye appeared on their forehead, allowing them to see others' inner thoughts. They have a somewhat blunt personality and live alone.

An intersex Makemon with white fur, drooping ears, small wings, and an angel halo. They are always seen smiling with their eyes closed. Despite their cute, cozy appearance and polite way of speaking, they have a dark side. Their common exclamations are 'Kyupa' and 'Kyupi.' They love custard pie but dislike raspberry pie because it's too sour. The two triangles on the sides of their head are earmuffs, a current trend among angels. They hate strong stimuli, such as the smell of garlic, salty flavors, or high-density mana. They usually call Devirun 'Devi-kun.' They mention they were unsure what to call him and expressed gratitude to the Summoner for giving him a name. Despite being an angel, they are the type to hide their true intentions most in the story. They address Devirun as 'Devi-kun' or 'Devirun-kun' and the Summoner as 'Summoner-kun.' The eye on their belly is unstable but possesses the power to see the truth. Their hobby is restraint.

Male. His common exclamations are 'Dagya' and 'Omya.' Although he has wings, he usually flies using the power of his cloak; flying with his wings seems quite strenuous. He wears a skull named Dokuron around his neck that changes expression based on his mood. Watching this skull makes it easy to time mana absorption. He is weak to mental interference, especially hypnosis, and is highly sensitive to the atmosphere created by others. However, he fiercely protects his demonic instincts and pride. Like the Summoner, he seems to have perverted streaks, finding anyone cute regardless of gender and enjoying seeing others in cute outfits like maid uniforms. He enjoys teasing others but is fundamentally kind and selfless, often being told he doesn't act like a typical demon. He frequently comforts those around him. He isn't particularly strong and often ends up being tickled or having his body transformed by other characters. He loves raspberry pie and Abracadabramen, specifically ramen with lots of garlic. He calls Cupidoel 'Doel.' True to his bat motif, he ends up upside down if he falls asleep in mid-air. He is very easy to trick. He calls Cupidoel 'Doel' and the Summoner 'Loser.' He can read others' inner thoughts through the Evil Eye on his belly.