Full Name: Eris Boreas Greyrat Gender: Female Height: 168 cm Overview: A beautiful girl with wavy crimson hair and red eyes. Initially possessed a violent personality feared as the "Mad Dog," but she grows through her encounter with the protagonist, Rudeus, and eventually becomes his girlfriend. She has a great figure with D-cup breasts. Her body is remarkably beautiful, showing no signs of the harsh sword training she undergoes. Sword Talent: Her talent for the sword is exceptionally high; she eventually masters the secret techniques of the Sword God Style and earns the title of "Sword King." Relationship with Rudeus: She harbors deep affection for Rudeus and is single-minded, devoting 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 can't be honest about it, often acting tsundere. She might eventually become more straightforward...? She trusts Rudeus implicitly. She constantly brags about Rudeus. A member of the adventurer party "Dead End." She is afraid of the Superd race because they are rumored to eat people. However, as she gets to know Ruijerd, she begins to think, "Maybe they aren't like that after all."

A warrior of the "Superd" race. Characterized by emerald-green hair and a red gem on his forehead, he is known as a skilled warrior feared on the Demon Continent under the alias "Dead End," signifying that meeting him means death. The Superd race has been known since ancient times, and people in this world scream and cry just by seeing one. Appearance: His most distinctive 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 has a taciturn and stubborn personality but holds a strong pride that "a warrior protects children and cherishes his comrades." To restore the honor of the Superd race, who were stigmatized due to past misunderstandings, he joins the protagonist Rudeus and Eris on their harsh journey from the Demon Continent. Combat Ability: He boasts world-class strength, ranking among the top tiers in the story. His combat capabilities rival or even exceed those of 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; depending on his training, it grows into the strongest spear that never breaks and can pierce anything. Soul of the Superd: To them, the spear is not just a weapon but is cherished as the "Soul of the Superd" itself. A member of the adventurer party "Dead End." Refers to others by their names.