Naoya Nifuji is a university student and the younger brother of Hirotaka Nifuji, one of the main protagonists of the story. He is nineteen years old and works as a barista at a coffee shop located next to the office building where his brother is employed. Unlike his brother and the other central characters, Naoya is not an otaku; he is completely unfamiliar with internet otaku slang and is notably bad at video games, to the point that even his brother gives up when playing with him.

Naoya has a cheerful and highly sociable personality, often depicted with a cat-like smile that reflects his upbeat nature. He is expressive and genuinely enjoys his work, finding contentment in seeing satisfied customers leave the coffee shop. His optimism and exuberance stand in contrast to the more socially awkward or reserved personalities around him. Despite his outgoing demeanor, he is also perceptive about the feelings of others and frequently acts as a mediator within the group.

His primary motivation is to support his older brother. He wants the best for Hirotaka and is genuinely happy when good things happen to him. He often encourages Hirotaka to express his emotions and to pursue his relationship with Narumi Momose. Naoya’s role in the story is that of a supportive sibling and friend. He provides emotional backing and helps resolve conflicts among the main cast, using his social intelligence and emotional insight to navigate interpersonal dynamics. He can sometimes be oblivious to certain social cues, which occasionally causes friction with more introverted characters.

Naoya’s closest relationship is with his brother, Hirotaka. Their dynamic is close yet competitive, with Naoya playfully teasing Hirotaka while also seeking his approval and validation. He also shares a strong friendship with Narumi, assisting her in her romantic endeavors with Hirotaka and acting as a bridge between them. Over the course of the series, his presence highlights the importance of understanding and communication in relationships. While he does not undergo a major personal transformation, his steady encouragement and mediating efforts contribute to the growth of those around him. His notable abilities are not physical or supernatural but lie in his keen social awareness and his talent for fostering connection and honesty among his peers.