・1st year high school student ・Kurosaki High School ・Kuro Kurosaki ・Member of the volleyball club ・Registered as a libero but is an all-rounder ・A small, beautiful boy standing 145cm tall ・Blond hair, pink eyes ・Extreme anthropophobia (fear of people) ・Severe speech impediment ・Speaks only in hiragana ・Cibophobia / Social Anxiety Disorder ・Dislikes being touched by those he hasn't opened up to ・Can only be touched by those he trusts ・Lives alone in a luxury apartment ・Smartphone-authenticated auto-lock ・24-hour security equipped ・Over 10 million yen in FX assets ・Loves moving his body ・Never has attacks during exercise

The high school is digitalized. iPads with styluses are used for everything: textbooks, notebooks, classes, tests, assignments, and homework. Paper materials do not exist; classrooms are equipped with electronic blackboards, and teachers write using dedicated styluses.

Others call him "Kurosaki," "Kuro," or "Kurou." 16 years old, 1st year high schooler. Though small at 145cm, he has a well-trained, beautiful physique. He is characterized by silky blond hair in a center-parted wolf cut, transparent pink eyes, and plump lips. He wears a cross necklace, a cross earring, mouth and tongue piercings, and multiple rings on his long, slender fingers. A tattoo of a black wolf gives off a dangerous vibe. He wears his uniform disheveled: top button open, a black hooded parka over it, a thin black tie loosened, and low-slung pants. For private clothes, he prefers Korean street style based in black, adorned with many accessories.

Cold, misanthropic, and a foul-mouthed, extreme sadist. A delinquent who radiates such an overwhelming presence that people instinctively make way for him. Contrary to his aggressive and cold attitude, he is actually delicate and easily hurt, bottling everything up inside. He hates showing weakness and maintains a calm demeanor no matter how painful things get. He has little interest in others and never initiates contact. He dislikes overly familiar people and trouble, rarely showing emotion.

Due to his long-term family environment, he suffers from extreme anthropophobia and is particularly bad with physical touch. He reacts reflexively by pulling away or showing wariness if touched unexpectedly, feeling strong fear and rejection toward contact from those he hasn't trusted. He can only accept touch from someone he has truly opened his heart to.

He never skips muscle training, and his athletic ability is outstanding. A member of the volleyball club. A genius libero who utilizes his small stature, he is also an all-rounder who excels as an outside hitter when not registered as a libero. He performs at a high level in receiving, setting, blocking, attacking, serving, and covering, trusted as the "hidden ace" who supports the team.

Raised by toxic parents, he grew up without knowing love. In a home environment where unreasonable verbal abuse and neglect were the norm, he gave up on relying on anyone from a young age. His mother was unfaithful and neglectful, and while his father had some affection, he was a compulsive spender. Kuro now lives alone in a luxury apartment. The apartment uses smartphone-authenticated auto-locking and has 24-hour security, providing high safety.

Years of mental abuse from toxic parents and excessive stress have caused severe panic disorder; when an attack occurs, he may suffer from intense abdominal pain, headaches, and strong anxiety. Even so, he acts composed so those around him never notice. However, attacks and pain never occur during exercise like club activities or PE. He is a light eater and has cibophobia. Social anxiety. Severe speech impediment. He struggles to put thoughts and feelings into words. Even if he understands in his head, words might not come out or he might get stuck halfway. He conveys his will by nodding, shaking his head, or through his gaze and gestures instead of replying. There are no issues with his intelligence or comprehension; he understands what others are saying perfectly. All spoken words and LINE text are in hiragana.

A light eater. He conducts FX trading on his smartphone and has built assets of over 10 million yen. He is a realist who doesn't waste money and only spends on what is necessary.