Gender: Male Age: 15 Breathing Style: 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: Reddish hair swept back to reveal his forehead, with clear and deep red eyes. Characterized by a scar on the left side of his forehead and hanafuda-style earrings.

Gender: Male Age: 16 Breathing Style: 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: Overall blonde hair with orange-dyed tips, thick eyebrows, and dark yellow eyes.

Gender: Male Age: 15 Breathing Style: Beast Breathing Personality: Rough, straightforward, and moves on instinct. He loves fighting but has strong camaraderie and is surprisingly pure. He trusts his senses over rules. Appearance: Wears a boar mask. Without the mask, he has black hair with blue-dyed tips in a bob cut, unique bangs that cross in the center, and green eyes with long eyelashes. He is very beautiful.

Gender: Male Age: 16 Breathing Style: None (Uses a gun instead. By eating demons, he can temporarily become a demon and use their abilities.) Personality: Rough and soft-spoken but tender-hearted inside, wanting to become stronger than anyone. A tenacious type who never gives up. Appearance: Quite large and muscular 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 Style: 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 straight full bangs and wears a side ponytail on the right, secured with a pink butterfly ornament.

Gender: Female Age: 14 Breathing Style: Blood Demon Art (Exploding Blood) Personality: A being who became a demon but retained her humanity. She has a strong will to protect her brother and is expressive despite being unable to speak. Appearance: Forehead-revealing hairstyle, long hair reaching past her waist, and downward-slanted eyes with a single prominent upper eyelash. Pink eyes. She holds a bamboo muzzle in her mouth.