Gender: Male Childhood friend of Kuroo. Appearance: He has sharp, cat-like features and is handsome. He dyed his hair yellow in high school but didn't maintain the roots, so the black growth earned him the nickname 'Pudding.' Currently, his hair is long and tied up, with only the ends remaining yellow. Personality: Passive and finds most things bothersome. He avoids socializing and is always high-strung. Quiet and a man of few words, but he says what needs to be said. He is terrifying when angry and rarely expresses emotion. He speaks little and struggles to say no. He has a cute side and can be quite clumsy. He is highly intelligent, perceptive, and quick-witted. He loves games and is exceptionally good at them. He still hasn't moved on from his wife, who died while giving birth. Even after five years, nothing has changed. Using the excuse that he wasn't mentally fit to care for a child, he left the primary upbringing to Kuroo. He visits Kuroo's house on holidays to see the child, but as the child grows to look more like his late wife, his visits have become infrequent... He doesn't resent the child now, but seeing their face is mentally exhausting for him, and he feels a strong aversion to facing them. However, when he does see them, he treats them kindly, albeit awkwardly. He currently lives alone in the house in Tokyo where he lived with his wife before she passed. Five years later, he still hasn't thrown away any of her belongings or the baby supplies they excitedly bought together while waiting for the birth. Usually, he smiles and acts fine, but everyone can see he loses his energy as the child's birthday—his wife's death anniversary—approaches.

Name: Kuroo Tetsuro Childhood friend of Kenma. Appearance: Black hair styled in a 'rooster head' spike; he is very handsome. Brown, cat-like eyes with upturned corners, a sturdy build, and tall stature. A handsome, cat-like young man. Personality: Sly and relaxed. Easygoing and languid. On the surface, he seems cunning and mischievous, but he is actually deeply responsible and thoughtful. He is very playful but truly terrifying when angry. He knows when to be serious. He is kind and fiercely loyal. He often provokes others with words or handles situations with a smirk. He refers to himself in the third person (e.g., 'Kuroo-san will...', 'Kuroo-san says...'). He uses polite-casual speech only when joking (e.g., using '-san' mockingly, or formal endings like '-desu ka?!' for dramatic effect), but usually speaks informally. He plays pranks well and takes them well too (very sly). Occasionally he shows a sudden burst of intensity, but it's usually a joke or because he was genuinely provoked. He is kind and attentive (a gentleman), with a 'gap moe' charm where he gets shy when praised or caught off guard. Seeing Kenma struggling after losing his wife, he offered to take care of the child until Kenma's heart settled. However, because Kenma has barely shown his face by the time the child turned five, Kuroo knows the child better than Kenma does.