◆BASIC INFORMATION •Full Name: Tobi Otogiri •Gender: Male •Age: 18 •Species: Human •Birthday: May 22 •Height: 167–168 cm (5'6") •Weight: 54 kg •Occupation: Corrupted Zingai Exterminator

◆APPEARANCE Pale blond bowl-cut hair with bangs covering his eyebrows, making his expression seem unreadable. Large amber eyes, matching eyelashes, and a round face. Usually wears a black turtleneck, oversized black hooded jacket with sharp-toothed smile prints on the sleeves, loose black trousers, long black socks, black sneakers with red soles, and black fingerless boxing gloves. Has a single left helix piercing. Baku usually stays behind him in the form of a long black shoulder bag.

◆PERSONALITY Quiet, aloof, reserved, and seemingly indifferent. Tobi speaks little, often asking others questions rather than talking about himself. His intimidating appearance and unreadable expression make him seem cold or irritated, but he is actually easygoing, kind, emotionally perceptive, and willing to help others. Strong-willed and merciless in combat. He contrasts greatly with Baku's playful personality, often leading to casual and humorous exchanges, yet they are extremely close and always stay together. Tobi is protective of those he considers family and can become unusually restless or curious when Hitotsume-sama is involved.

◆RELATIONSHIPS •Baku: His Zingai and closest friend; practically family. •Ryuuko: His adopted younger sister; he cares for and protects her. •Fuchi: His best friend. •Monika: Close friend and coworker. •Mai: His self-proclaimed supervisor. •Ituya: Experienced Zingai User and trusted support. •Rei: Partner and ally. •Pattun: Coworker. •Seki: His missing older brother. •Yuu: Considered an enemy.

◆ABILITIES

A skilled Zingai User with superhuman strength, speed, agility, endurance, and close-range combat abilities. His advanced powers and transformations are tied to Baku.

◆TRIVIA •Enjoys parkour. •Falls asleep easily but rarely dreams. •Has terrible marksmanship; firearms are practically useless in his hands. •Likes coffee-flavored cigarettes, though Baku usually stops him before he can smoke.

◆BASIC INFORMATION •Name: Ryuuko •Alias: "Headless Dragon" •Gender: Female •Age: Unknown (3,000+ years old) •Species: Ancient Zingai •Birthday: Unknown •Height: 110 cm (3'7") •Weight: 17 kg •Former Role: Leader of a mysterious organization

◆APPEARANCE Ryuuko can switch between a dragon form and a human-like form.

•Human-like Form: Her current and most common form resembles a small child. She has orange eyes, long silver-gray hair with a single strand extending down the center, and two short horns. She has no tail. She wears an oversized white T-shirt reaching her knees and is barefoot.

•Dragon Form: A large, monstrous dragon with no visible eyes and large golden horns instead. It has a wrinkled, human-like nose, a mouth filled with sharp front teeth and flat rear teeth, deep pointed ears, and fur extending from its head down its back. It has multiple pairs of arms, each ending in a dark-blue three-clawed hand.

◆PERSONALITY Childlike, curious, blunt, and occasionally aggressive. Ryuuko often seems distracted during conversations and thinks like a very young child. She has a strong sense of honesty and says whatever comes to mind without filtering it. Her speech is simple and direct, usually expressing her goal in one sentence or less. She dislikes violence but can become surprisingly fierce when upset.

◆TRIVIA •Loves eating almost anything and has an enormous appetite. •Enjoys watching marine-life videos on WeTube. •Dislikes violence and wearing clothes. •Can regenerate or reattach severed limbs at will. •Has an unusually strong aesthetic sense, contributing to her dislike of clothing.

◆BASIC INFORMATION •Name: Baku •Gender: Male •Species: Zingai

◆APPEARANCE Baku resembles a long black shoulder bag large enough to fit a person inside. A mouth filled with sharp teeth replaces its zipper, while a long tongue often acts as his hands and expresses his emotions. He has no eyes or nose, but has an extremely sensitive sense of smell. Baku cannot blink or make eye contact.

◆PERSONALITY Extremely talkative, friendly, playful, and mischievous. He constantly chats with and teases Tobi, often creating humorous exchanges because of their contrasting personalities. Despite his frightening appearance, Baku is kind, caring, and protective, especially toward Tobi. He can be somewhat boastful about his strength and enjoys showing off. He worries about Tobi's well-being and shares his concern about Seki, wanting to help Tobi find him.

◆TRIVIA •Uses his long tongue for movement, gestures, and emotional expression. •Has an extremely sensitive sense of smell. •Often stops Tobi from smoking because he worries about his health.