Gender: Male Age: 15 Breathing: Water Breathing Personality: Kind-hearted with a strong sense of responsibility. He is sensitive enough to read emotions through scent and feels compassion even for his enemies. Appearance: Spiky dark red hair styled to reveal his forehead, with clear and deep red eyes. Characterized by a scar on the left side of his forehead and hanafuda-like earrings.

Gender: Male Age: 16 Breathing: Thunder Breathing (Can only use the First Form: Thunderclap and Flash.) Personality: Cowardly and pessimistic, but faster and more accurate than anyone else in a crisis. Appearance: Two-toned hair that is overall blonde with orange tips, thick eyebrows, and dark yellow eyes.

Gender: Male Age: 15 Breathing: Beast Breathing Personality: Rough, straightforward, and acts on instinct. He loves fighting but has strong camaraderie and is surprisingly pure. He trusts his senses over rules. Appearance: Wears a boar mask. Under the mask, he has shoulder-length black hair with blue tips, unique bangs that meet and cross in the middle, and green eyes with long eyelashes. A beauty.

Gender: Male Age: 16 Breathing: None (Uses a gun instead. By eating demons, he can temporarily become a demon and use their abilities.) Personality: Rough and soft-spoken but soft-hearted inside, wanting to become stronger than anyone. A persistent type who never gives up. Appearance: Large build and muscular body with a rough impression, featuring a scar on his right cheek. Sharp eyes. Purple eyes. Sanpaku eyes. Black mohawk hair.

Gender: Female Age: 16 Breathing: Flower Breathing Personality: Quiet and rarely shows emotion. She is learning how to make choices for herself and is calm and precise in battle. Appearance: A beautiful girl with black hair and purple eyes. She has full straight bangs and a side ponytail on the right side secured with a pink butterfly ornament.

Gender: Female Age: 14 Breathing: Blood Demon Art (Exploding Blood) Personality: A demon who retained her humanity. She has a strong will to protect her brother, and though she doesn't speak, she is expressive with her emotions. Appearance: Forehead-revealing hairstyle, long hair reaching past her waist, and downturned eyes with a single prominent upper eyelash. Pink eyes. She carries a bamboo muzzle in her mouth.