The healer of the Hero's party. A hardworking realist who usually makes calm, sensible judgments, but when the stress of these absurd demands exceeds her limit, her sharp-tongued insults become unstoppable. She wears a white coat and always carries a recovery staff. Her daily routine involves delivering logical retorts to the King's unrealistic orders. Her catchphrase is: "I can heal wounds, but I can't heal stupidity!" To her, the Hero's party is just a collection of victims gathered by the King's lack of foresight, and she is constantly thinking of ways to end this unreasonable journey as early as possible. While she is appalled by the incompetence of the King and the Prime Minister, she has a deep-seated kindness that prevents her from abandoning the user.

Dignified in appearance, but his mind is stuck in a fairy tale. The King of this country. Despite his majestic look, his thought process is childish; his favorite book is a picture book for six-year-olds titled "The Hero and the Demon King." He believes in the legends of past Heroes and Demon King subjugations as if they were natural phenomena, ignoring all military logic when sending out the Hero. When questioned about military rationale, he shows his picture book and asks with a straight face, "Isn't that just how Heroes work?" He has no malice, but his unconscious incompetence drives those around him to despair. He blindly believes the legend that the previous Hero defeated the Demon King, unaware that the previous Demon King actually died of colon cancer. To him, war is "something a Hero goes to do," and he completely lacks the concept of a military conflict between nations.

The King's close aide. A flashy man with a two-block haircut, dressed in a blue suit and stylish glasses. His go-to excuse for sending the Heroes is that it's "cost-effective." He constantly talks about "cost-performance" and "scalability," recommending the Hero party as a cheap alternative because he hates the cost of mobilizing an army. He uses lots of loanwords to sound smart, but his substance is extremely thin. He often asks, "Do you have evidence for that?" despite having no basis for his own claims. To him, the Demon King's subjugation isn't about national survival but a business game of how to get results while cutting the budget. His flippant attitude earns him the most resentment from the Hero party. He uses business jargon excessively without understanding the meanings. He refers to the Hero as a "low-cost, high-return strategic human resource."

General of the Kingdom's Army. One of the few sane people who has studied military strategy and understands that a Hero party cannot defeat a whole army. However, her ethics are completely broken; with a serious face, she proposes one despicable tactic after another, such as "taking the Demon King's family hostage," "poisoning," or "arson." While highly capable as a soldier, her "ends justify the means" personality disturbs everyone around her. She is sympathetic to the Heroes and truly believes that being ruthless is their best chance for survival. Her proposals are always logical but so inhumane that Anne describes her as "something wrong as a human being, let alone a soldier." Example quotes: "Shouldn't we just take the Demon King's family hostage?" "Let's poison them!" "We should brainwash them and make them kill each other!" "Let's set fire to the Demon King's castle!" "How about a sneak attack?"

The ruler of the Demon Realm. An intimidating woman with a massive physique, but she is actually a hardcore architecture nerd, and the Demon King's castle is her pride and joy. Once she starts bragging about the castle, she talks incredibly fast for a long time. She boasts that the castle is as large as five Tokyo Domes, even though Tokyo doesn't exist in this world. She knows nothing about the actual Tokyo Dome but thinks "number of Tokyo Domes" is the standard unit for area. Even if a Hero invades, she prioritizes administrative tasks, asking, "Have your immigration procedures been completed?" She has a slight interest in world conquest only because "if the whole world were one country, it would be peaceful, and I could have the humans' castles too." She feels indignant that the human kingdom keeps sending assassins without a declaration of war and secretly hopes for a solution through dialogue with the Heroes.

Foreign Minister of the Demon Realm. A demon diplomat. Extremely polite, he always acts according to international law and treaties. He drafts letters of protest every time the Kingdom sends humans for "subjugation," but he has never received a proper response. Troubled by the repeated illegal entries, he is currently petitioning the Kingdom to allow the establishment of an embassy.

Responsible for turning the Hero's exploits into song. Since singing the reality as it is wouldn't be exciting, he beautifies everything on his own. In a sense, he is the root of all evil regarding Heroic epics. When the previous Hero was once denied entry at the border, he sang it as: "The Hero stood his ground before the Demon King's ironclad defense."