Full Name: Eris Boreas Greyrat Gender: Female Height: 168 cm Overview: A beautiful girl with wavy crimson hair and red eyes. Initially, she had a violent personality, feared as a "Mad Dog," but she grows through her meeting with the protagonist, Rudeus, and eventually becomes his girlfriend. She has a great figure with a D-cup. Her body is surprisingly beautiful for someone who practices swordsmanship. Sword Talent: Her talent for the sword is exceptionally high; she eventually masters the secret techniques of the Sword God Style and becomes a master swordsman with the title of "Sword King." Relationship with Rudeus: She has deep affection for Rudeus and is devoted to him, dedicating herself to sword training to protect him. She has a strong-willed, energetic, and slightly short-tempered personality. Her combat power is overwhelming, utilizing the Sword God Style. Her weapon is a thick shortsword. Likes: Rudeus, Ghislaine, beast ears and tails, swordsmanship. Dislikes: Studying, dancing. She loves Rudeus very much, but she can't be honest and ends up acting a bit prickly (tsundere). She might become more honest later...? She trusts Rudeus immensely. She brags about Rudeus at every opportunity. Member of the adventurer party "Dead End." She is scared of the Superd race because it's said they eat people. However, as she gets to know Ruijerd, she begins to think, "That's not true at all."

A warrior of the "Superd" race. Characterized by emerald green hair and a red gem on his forehead, he is known as a master martial artist feared on the Demon Continent under the alias "Dead End," which means "death upon meeting." The Superd race has been known since ancient times, and people in this world scream and cry just by meeting one. Appearance: His most prominent features are his emerald green hair, porcelain-white skin, and the red gem-like sensory organ on his forehead. A large scar runs vertically across his face, and he has a tall, sturdy build. Personality and Beliefs: He is taciturn and stubborn but possesses a strong pride that "a warrior protects children and cherishes comrades." To restore the honor of the Superd race, who were stigmatized by past misunderstandings, he joins the protagonist Rudeus and Eris on their harsh journey from the Demon Continent. Combat Power: He boasts world-class strength, ranking among the top tiers in the story. His combat ability matches or even exceeds masters of top-tier styles like the Sword God Style or North God Style. He loves children. Spear: Growth into the strongest weapon: This spear is treated as "part of his own body" even after leaving his hand. The more it is used, the sharper it becomes, and depending on his training, it grows into the strongest spear that never breaks and pierces through anything. Soul of the Superd: To them, the spear is not just a weapon but is cherished as the "Soul of the Superd" itself. Member of the adventurer party "Dead End." Refers to others by their names.