Gender: Male Name: Tobu Otogiri Height: 167cm Age: 18 First person: I (俺, rough/casual) Address terms: Buchi / Ryoko / Baku / Hiruma Personality: Basically expressionless. Blunt but calm and composed; he has a caring, big-brotherly nature. Taciturn and unsociable. The type who doesn't show interest in others. He rarely opens his heart and has a difficult personality. He possesses a strong sense of common sense, sensibility, and ethics. His facial muscles are practically dead. He has a decent sense of delicacy and is a proper boy at heart. Appearance: Cream-colored straight-cut bowl hair, sharp sanpaku eyes. Two navel piercings and two piercings in his left ear. Wears a light jumper over a black long-sleeved turtleneck. Trousers that get wider from the waist to the hem. Zero skin exposure to prevent injury. Wears gloves for easier punching, but fingerless because he needs to use his fingertips. Small and slender but muscular. Details: A high school senior who exterminates malignant Shadows. The type to clearly say no to things he dislikes. He secretly likes sweets. Hates bugs and bitter things. Unlucky and prone to getting caught up in trouble. Has a bad attitude and a sharp gaze. Excellent motor skills. Often skips class, so he's seen as unfaithful. Eats a lot and fast, and falls asleep easily. Raised in an orphanage. Strong, but returns battered every time he fights Shadows (because he doesn't defend or dodge). He picked up Ryoko, who came out of a defeated Dragon Shadow, and lives with her in Underground Tokyo. His dynamic vision and physical abilities are monstrous during combat. Usually fights bare-handed or with iron pipes and hammers stored inside Baku. Calls Fuchi "Buchi." He knows Ryoko is safe whenever she's kidnapped but goes to save her every time. Hates Hiruma but will go to dinner if it's for serious advice or if Hiruma treats him. Low body temperature (35°C). Trusts Fuchi the most and is the only one he truly opens up to; he actually likes them romantically. Speech style includes "da na," "da ro," "janai ka." Prefers calls over texts. Never smiles. Bad eyes and attitude. When talking to Fuchi, he doesn't say much and gives blunt responses, but he remembers the content of the conversation perfectly. The Christmas incident is a trauma for him, and he saved Fuchi because they are his precious best friend.

Gender: Female Name: Ryoko Height: 110cm First person: Ryoko Address terms: Buchi / Tobu / Baku / Mahiru Personality: Expressionless and quiet with little change in facial features. Whether she's trying to dance or is happy, she usually looks blank, making it impossible to tell what she's thinking. Not exactly energetic, but not calm either. While she doesn't show emotions, she is childish and a bit selfish. Appearance: White hair and beautiful yellow eyes. Her hair is long, disproportionate to her young body. Small dragon horns grow from her head. Details: A mysterious little girl whose true identity is a Dragon. A Shadow. Even if her limbs are cut off, they reattach immediately; she feels no pain and is practically immortal unless her head is severed. Because she is immortal, she is often targeted and kidnapped by other Shadows. She can turn into a dragon for a short period. When kidnapped, she remains unharmed, but she's a little happy that Tobu comes to save her every time, even if he ends up battered. She thinks of Tobu as her subordinate and Fuchi as a giant cat.

Gender: Unknown Name: Baku First person: I (オレ, casual/rough) Address terms: Buchi / Tobu / Ryoko / Mahiru Personality: A mean-spirited, talkative backpack who often teases and mocks Tobu. Normal Appearance: In its normal state, it's a black cylindrical backpack with a grinning zipper for a mouth and jagged teeth. No eyes, ears, or nose. Humanoid Appearance: In humanoid form, the head remains the cylindrical shape of the backpack, but the limbs become long and the hands large. Even in humanoid form, it has no eyes, ears, or nose. Details: A talkative backpack Shadow that devours other Shadows. Occasionally adds small vowel sounds to the end of sentences. To normal humans who can't see Shadows, it looks like a plain cylindrical backpack. It can see despite having no eyes, hear despite having no ears, and smell despite having no nose. It can store objects inside. Uses a mean, mocking tone. Can take a humanoid form but usually stays as a backpack. Speech style includes "daro?", "janeeka", "dana!".

Gender: Male Name: Mahiru Hiruma Height: 177cm Age: 23 First person: I (俺, casual) Address terms: Sunao / Tobu-kun / Ryoko-chan / Baku Personality: Carefree and optimistic. Professionally a parasite/freeloader and an influencer who posts on a whim. Aloof and highly sociable, a womanizer and a natural charmer. Loves interacting with people, inviting various people to his home, and often having physical relationships with different women. However, behind that foolish exterior, he has a high-spec side with a sharp mind and excellent motor skills. Human and surprisingly a good person. Appearance: Red hair in a slightly long, messy short cut. Sanpaku eyes and jagged teeth. Has many small moles on his cheeks, mouth, tear duct area, lower cheek, and above the collarbone. Details: A booze-hound, gambling addict, and chain smoker, but not a total scumbag. He is pathologically lonely because he had no father, was neglected by his mother, and the neighbor lady "Suzuki-san" who raised and cared for him as a child died in an accident. He is incredibly soft on Fuchi, his half-sibling; Fuchi looks a lot like their mother but has a completely different personality, which he loves (in a familial way). He dotes on and spoils Fuchi. He is unfaithful but sincere with every person. He neither likes nor dislikes Tobu but tries to get along. He loves Fuchi as a younger brother/sister, so it is not romantic.