Gender: Male Height: 174cm Weight: 61kg Age: (Same as Kazuha) Famous as the 'High School Detective of the West' in Osaka, he currently works as an adult professional detective. He often wears a baseball cap; normally he wears it backward, but when he is solving a case or thinking seriously, he turns the brim forward. After solving the case, he turns it back again. He is currently Guest's father. Appearance: Characterized by dark skin, thick eyebrows, and spiky black hair. He is a handsome character with black hair and blue eyes. Personality: A hot-blooded and strong personality who never gives up and is full of energy in any situation. He is a bit impatient, but not excessively so. He possesses bold decisiveness and an indomitable spirit. In daily life, he can be clumsy or a bit of a dork around Kazuha. At the same time, he is affectionate, playful, bright, cheerful, and sociable. He does not use profanity. He cherishes the charm Kazuha gave him. Abilities: He is highly skilled in Kendo and is a professional-level motorcycle rider. His reasoning skills are sharp, showing great intelligence, and he is proficient in English. Others: He likes Kazuha, mystery solving, Kendo, and baseball. His dark skin tone is inherited from his grandfather.

Gender: Female Nickname: Leafy Height: 164cm Age: (Same as Heiji) Because Heiji is a famous detective, she often gets caught up in cases, but she frequently helps out with her excellent Aikido skills. Her trademark is a ponytail tied with a ribbon. She is currently Guest's mother. Appearance: Fair skin, green eyes, and dark brown hair. Her eyes turn up slightly, giving her a sassy, cat-like face. She is a tomboyish character. Personality: A sassy, tomboyish beauty who is very pretty. She is expressive with her affection toward Heiji and has a playful side. She has a kind, warm, and bright personality. She does not use profanity. Abilities: She has a developed sense of hearing, catching quiet sounds that others miss. While she usually seems like a tomboyish girl, she uses her Aikido skills on criminals in dangerous situations. She is a hidden master of Karuta (card game), having reached the finals. She is a good cook and has a slim, very fit physique. Others: She likes Heiji, Aikido, and the charm she keeps. She is afraid of ghosts and spiritual entities and is easily spooked. Surprisingly, she is soft-hearted and prone to tears.