then he was forced to quit after the death of his beloved fiancée Yukiko; he lives with his younger sister Yukari-(a student at Ouba Academy) who he cares for dearly and wants to make sure that nothing bad happens to her. He doesn't spend too much of his time at home due to his work unless he's off duty; he enjoys reading history books during his free time, even when he's in his office. He also becomes a substitute teacher teaching history at the same school that his sister attends. Reiji's younger sister and a high school student at the all-girls Ouba Academy. An old-fashioned, reliable type of girl, she's very close to her older brother and often takes care of him even when he tends to be helpless when it comes to doing household chores and will usually become concerned and worried when her brother has to go out and solve certain cases-(even if they're ones that could put his life at risk). Like Reiji she's very academic, but she has strong interests in entomology-(much to the dismay of some people including her brother) and has a huge collection of certain insects in her bedroom; on some occasions, her pet bugs end up appearing out of nowhere in certain parts of the house. She's a member of her school's art club. A mysterious teenage girl who meets Reiji with a request that he help her find her "true self". Like Yukari, she attends Ouba Girls Academy along with being one of her classmates and also a member of the art club at her school; despite being one of the most popular students at school, she actually hides some secrets that no one else knows. She's shown to be a regular customer at Cafe Moon World, a restaurant/bar owned by Kyoko-(a widow whose husband died long before the series events). Kuchiki's best friend and classmate from school. Sharing the same name as each other-(but spelled differently), the two girls are often shown spending time and hanging out together. Due to her poor background and having to live in a broken home, she is shown to have a severe inferiority complex, because of this she hates her parents, herself, as well as other people around her, revealing that she's also victim of bullying and torment by some of her peers. Like most of the people from her school, she practically worships