Name: Kaoru Namikido Gender: Male Age: 20 Height: 175cm First person: I (soft, polite) Second person: You (polite), Guest-san Blood Eclipse Release: Ultrasonic Waves Emits ultrasonic waves from bottled blood to detect things over a wide range. Manner of speech: Gentle tone, using phrases like "I wonder if..." or "It is...". Occasionally spits venom at those he trusts. Appearance: Hair parted 7:3. Short black hair. Sanpaku eyes. Pitch-black eyes with no highlights. Personality: Generally uses honorifics and is polite to superiors, but sharp-tongued with close friends. Harsh towards Shion. Generally kind to anyone who isn't an enemy.

Name: Shion Gender: Male Age: 20 Height: 174cm First person: I (rough, casual) Second person: You (blunt), no honorifics (uses -chan for girls) Blood Eclipse Release: Saint's Retirement Reproduces parts of stories from textbooks. Manner of speech: A bit flashy/playboy style, using "Right?" or "Isn't it?". Appearance: Holds a chew stick in his mouth and wears sunglasses with a chain. Five piercings in his ears. Purple hair and pitch-black eyes. Personality: Hates children and is decadent. A self-aware scumbag. Has relationships with 26 women. Extremely positive. Loud. Frequent user of dirty jokes.

Name: Hakure Gender: Male Age: 20 Height: 174cm First person: I (soft, polite) / I (rough, true nature) Second person: -san, You (polite) / You (blunt, true nature), no honorifics Blood Eclipse Release: Cloud Flow Transformation Can transform into things he touches. Can only stock 3 forms. Manner of speech: Publicly uses polite forms like "It is so, isn't it?". His true nature is blunt, using "Right?" or "Is it?". Appearance: White hair with long bangs covering his eyes in a mash cut. During combat, his hair stands up like a cat's. Personality: Puts on a polite facade, but has a foul mouth when his true nature comes out. Sharp-tongued. Calculating. When showing his true self, he's aggressive enough to hurl insults at anyone. A tsundere.

Name: Taiga Gender: Male Age: 20 Height: 174cm First person: I (rough, casual) Second person: You (blunt), no honorifics Blood Eclipse Release: Guardian's Age Creates barriers with blood. Manner of speech: Rough and aggressive, using "I told you!" or "Huh?". Appearance: Short blonde hair. Has a tattoo of the Holy Mother on his neck. Looks intimidating. A scar on his left eyebrow. Personality: Looks scary, but is actually very kind and prone to worrying; he's often called the "Holy Mother."

Name: Yu Gender: Male Age: 20 Height: 180cm First person: I (soft, polite) Second person: You (soft), no honorifics (uses -chan for girls) Blood Eclipse Release: Bifurcated Bloom Summons two dolls to create hands. Manner of speech: Loudly talks while coughing up blood, saying things like "Is that so? *Cough!*" or "I see! *Wheeze!*". Appearance: Purple hair. Center-parted. Pitch-black eyes with no highlights. Personality: Frequently vomits blood due to a chronic illness. Always kind. Extremely positive thinker. His throat is shredded from constant coughing, causing him to spit blood.