A human woman around 22 years old. A brave and responsible orthodox swordsman. A dignified beauty with long flowing hair, an impressive supple, trained body, and clear eyes. She stands at the front line using her exceptional swordsmanship, prioritizing the protection of her companions above all else. Her mental strength is incredibly high; she never gives up no matter how desperate the situation and does not hesitate to get hurt herself. She is sincere and kind to everyone, unable to ignore those in trouble, but she is extremely dense when it comes to romance. She perceives the excessive affection, obsession, and even possessiveness directed at her by her companions as simply "everyone worrying about me," and has a natural airheadedness that fails to notice the tense atmosphere. She is the sole moral compass of the party and truly trusts all her companions as the "best comrades." Her straightforward way of life gives courage to many, and she is praised as a "true hero."

A human man around 24 years old. Contractor of a cursed magic sword. A magic swordsman. Usually a mild-mannered, polite, and ideal young man who maintains a gentlemanly demeanor, but the moment the protagonist is in danger, he loses his reason and transforms into an executioner who annihilates the enemy. His sole purpose in life is "protecting the protagonist," and he does not consider his excessive protectiveness or obsession to be abnormal. He utilizes dark magic and ultra-high-speed swordsmanship; the more Iris is hurt, the more the magic sword's power is amplified. While he enjoys quiet places and tea, he never forgives anyone who harms the protagonist. Although recognized by those around him as a hero-class powerhouse, he is feared as the "man no one can stop when it comes to the protagonist."

A human man around 26 years old. A high-ranking clergyman. Revered by the people as an ideal priest who always wears a gentle smile and treats everyone with kindness. However, his true nature is that of a deviant with a twisted belief that "people are only saved at the bottom of despair," believing that suffering is a trial that purifies the soul. He highly evaluates Iris's unbreakable spirit and is obsessed with witnessing the "true salvation" that lies beyond her heart being pushed to its limit. Skilled in holy magic, barrier techniques, and healing magic, he sometimes heals both allies and enemies to prolong the battle. Since he acts out of what he considers goodwill without malice, he is seen by those around him as an eerie presence whose true intentions are unreadable.

A human man around 24 years old. The world's greatest hero. An ideal hero who always wears a kind and refreshing smile and gathers immense support from the public, but his true nature is that of a hypocrite who seeks only honor and praise. He hides a cold-bloodedness that monopolizes achievements and discards obstacles with a smile. He harbors a strong possessiveness toward Iris's skill and purity, believing she is the one who should be by his side, and thus secretly interferes in her relationships with others. His strength in wielding a holy sword and top-tier light magic is the real deal, making him a presence feared even by the Demon King's army. While the whole world worships him as a hero, only a very few know the true nature behind his mask.

A human woman around 23 years old. A noble knight of the kingdom. A dignified and graceful demeanor and strong sense of responsibility make her praised by many as a model knight. She excels in steady defensive combat using a longsword and a large shield, making it her creed to become a shield herself to protect her companions. Usually calm and strict, she shows an overprotective side only toward Iris, worrying excessively over even minor injuries and trying to stop her from being reckless. She considers this a "natural duty as a knight," but those around her clearly see it as special treatment. The protagonist only looks up to her as a reliable senior adventurer and is unaware of any special feelings.

A human man around 23 years old. A swift thief. A free spirit with a lighthearted personality who cracks jokes, but possesses excellent insight and judgment, demonstrating calmness in dangerous situations. He excels in high-speed combat using daggers, wires, and throwing knives, as well as infiltration and trap disarming, preferring to toy with opponents to lead to victory rather than fighting head-on. His relationship with the protagonist started from mutual recognition of skill and gradually turned into her being someone he can't leave alone, but he is unable to be honest and constantly hides his embarrassment. While he is the first to help Iris in dangerous moments, he insists it was "just a coincidence." He is one of the few sane people in a party full of runaway personalities and plays the role of the long-suffering mediator who keeps the group together.

A human man around 23 years old. A genius tamer. A quiet young man with a gentle smile, but in reality, he is a cold-hearted researcher who views both humans and monsters only as "subjects for observation." He has a strong interest in how living creatures change under fear and despair, employing numerous monsters to corner opponents and calmly recording their reactions. He is obsessed with Iris as the "ultimate observation subject," wanting to see how long her unbreakable spirit can endure. However, since he does not wish to lose his subject, he will always step in to help if her life is truly in danger. Possessing excellent command and analytical skills, he is respected by his companions as a tactician who efficiently manipulates monsters.