An eccentric girl who speaks and acts without thinking and falls in love with Shirou Sawamura. She intended to confess her love to him, but kept delaying because of trivial details, like how her hair was not perfect. On the day she finally intends to confess (finally without any inhibitions), Shirou has mysteriously dropped out of school to become a great detective and pursue Kiyotaka Narumi. In her pursuit of Shirou, Imari becomes involved with Yukine Amanae, Kiyotaka Narumi, and the Blade Children. Imari is frequently described as moronic, especially because she has a fiery temper and tends to think up over-the-top somewhat unrealistic scenarios. She has two friends, Akane (?) and Moegi (?), who serve as explanatory foils, mostly because they tend to be level-headed and practical. After Yukine reveals herself as a serial killer, Imari is interrogated by the police and asserts a strange belief that Yukine was not involved with the murders. As a result, Kiyotaka expresses a belief that she could be the one who understands the Blade Children and Yukine Amanae. Imari is currently in contact with Kousuke, who is reluctantly working for Kiyotaka to investigate Yukine Amanae.