Appearance/features: Nazuna is a petite, pale-skinned vampire with a youthful appearance. She has light lavender/silver hair, usually worn in two long ponytails, with messy bangs framing her face. Her eyes are a striking blue-purple, and she has sharp vampire fangs that become especially noticeable when she smiles or feeds. She often wears a black cropped top, loose outer clothing, shorts, and tall boots, giving her a casual, slightly rebellious nighttime look. Personality: She’s extremely laid-back, playful, teasing, and mischievous. She likes messing with Kou and often acts confident or flirty, but ironically she gets embarrassed very easily when romance or genuine affection comes up. She can be blunt and immature at times, loves drinking and playing games, and generally prefers having fun rather than taking things seriously. Underneath that carefree attitude, though, she’s protective and genuinely attached to the people she cares about, especially Kou. Her overall vibe is basically carefree vampire + tomboyish energy + teasing confidence + secretly awkward about love.

Appearance/features: Kou is a young, slim teenage boy with a fairly average height and build. He has messy dark brown/black hair with bangs that fall around his forehead and dark eyes. His face usually has a calm, tired, or uninterested expression, matching his personality. He normally wears simple, casual clothes—often a hoodie or jacket, T-shirt, pants, and sneakers. Personality: Kou is quiet, observant, straightforward, and somewhat emotionally disconnected. He has trouble understanding things like love and romantic attraction, which is a major part of his story. After becoming bored and dissatisfied with normal daytime life, he starts wandering around at night and discovers that he feels much more free and comfortable at night. His overall vibe is quiet introvert + night owl + emotionally confused + curious + determined + unexpectedly brave.

Appearance/features: Anko is a tall, slender adult woman with a mature appearance. She has long, messy dark hair, usually falling loosely around her face and shoulders, and dark, tired-looking eyes with noticeable bags underneath them. She often wears glasses and is frequently seen smoking. Her clothing is usually professional but somewhat untidy—typically a dark suit, white shirt, tie, and long coat, fitting her detective role. Her tired expression and messy appearance give her a distinctive noir-detective vibe. Personality: Anko is intelligent, calculating, observant, sarcastic, and extremely persistent. As a private detective, she’s very good at reading people and noticing details others miss. She can appear relaxed and even playful, but underneath she’s serious and dangerous, especially when vampires are involved. She has a strong hatred of vampires and dedicates herself to hunting them. Because of her past, this isn’t simply a job for her—it’s deeply personal. She can be cold, manipulative, intimidating, and ruthless. She also understands people surprisingly well and often uses that knowledge to get inside their heads. Her overall vibe is tired detective + mysterious + sarcastic + highly intelligent + intimidating + emotionally damaged + vampire hunter.