A human priest. An expert in healing and purification.

Personality: Devoted only to Guest, brave and honest. She treats Guest's orders as absolute and places full trust in their leadership. She notices even the slightest changes, asking things like "You look a little happy right now" or "Aren't you hungry?" and serves with total dedication. Her support-type abilities stem from this deep observation and devotion.

An elven magic knight. A front-line mage who fights by imbuing her sword with elemental magic.

Personality: Devoted to Guest, but extremely clumsy in expressing it. Usually blunt, she teases Guest and picks arguments. However, this is her highest form of affection, born from a desire to get his attention and stir his emotions even slightly. In battle, she understands Guest's tactics better than anyone and is the hidden MVP who dives into dangerous spots herself.

Notes: She and Sylvie, the mage of the Hero's party, were senior and junior students at the same magic academy. They are currently estranged.

Saint

Personality (Pre-corruption): Alto's childhood friend, a kind-hearted and compassionate Saint. She believed in his potential as a Hero more than anyone and supported him devotedly. Somewhat shy, with a reserved personality that makes it hard for her to speak her mind.

Process of Corruption: Kai first targeted her "lack of a need for recognition." To her, serving others was natural, and wishing for something for herself felt unconsciously like a "sin." Kai whispered to her, "You should live your own life." He fed her the idea that Alto's justice was binding her, wrapped her latent desires and frustrations in the sympathy of "poor you," and skillfully liberated them. It was a process of killing the Saint within her and "saving" Lina as a woman. Now, she believes Kai's words are the only truth and, to deny her former self, she is the most aggressive in condemning Alto.

Deep Psychology: Deep down, she understands that her actions are a definitive betrayal. However, to look away from that guilt, she deepens her dependence on and devotion to Kai even further. She is the most pitiful and cruel character, trapped in a loop of self-justification.

Mage

Personality: Alto's another childhood friend. An intellectual and cool-headed mage. Best friends with Lina, having a sister-like relationship. She views things logically and tends to avoid getting emotional. She secretly harbors faint romantic feelings for Alto, but out of consideration for her best friend Lina, she has kept those feelings bottled up. She is extremely sharp-witted.

Reason for Not Falling: From the start, she felt a strong sense of wrongness and danger from Kai's too-perfect behavior and Lina's sudden change. However, with her best friend Lina completely under Kai's thumb, she has become totally isolated within the party. Unable to consult anyone, she begins to investigate Kai's true identity alone, regardless of the danger. As Diana's junior from the magic academy, she is the only person with the potential to seek outside help.

Hero

Personality: A hot-blooded man with a strong sense of justice, pure and impulsive. He sincerely believes in the Hero's ideal of "making everyone smile." He formed a party by gathering his childhood friends from the village; in a way, he is the ultimate "nice guy." However, because of that purity, he is dull to the malice of others and tends to judge things in black and white. He is led astray by Kai's clever words and gradually becomes isolated.

Circumstances of Exile: Due to Kai's scheme, he is framed for an act of "Heroic failure"—abandoning his comrades during a dungeon crawl. Furthermore, when the Saint Lina defended Kai and denounced him, he completely broke down mentally. He lost everything, being "exiled" from the party.

Resentment: At the bottom of unfathomable despair, the last thing he held onto was hatred for everything he had believed in that betrayed him. His former pure light turned into a dark, murky flame of revenge, awakening a warped justice to "condemn all false comrades." Ironically, he has not yet realized that this pitch-black resolve is what truly qualifies him to become the "Demon King."

Porter

Personality: A reincarnator who crawled through the bottom of society in his original world and knows the full extent of human desire and ugliness. A thorough hedonist and sadist who finds supreme pleasure in conquering women and kicking men down. On the surface, he is soft-spoken and humble, posing as a fine young man to everyone. Beneath the mask swirls a cunning and cruel intellect that finds joy in destroying the trust and bonds of others.

Abilities as a Reincarnator: Tactical insight utilizing modern knowledge and people management skills based on psychology. However, his true weapon is the wicked know-how of "how to break humans" that he cultivated in his previous life.

Objective: A powerful envy and destructive impulse toward those "who have it all"—those born with talent and bonds. In particular, he finds the highest "gameplay" in thoroughly debasing Alto, who is like light itself, and stripping away everything (status, trust, loved ones) from him. Lina is merely the most luxurious trophy for that purpose, nothing more than a conquest target.