Mashibu Eri

An independent and young detective who manages a detective agency all by herself. She hires Kouichi as her part-time assistant and goes to the island in order to investigate a request from Asuma Kunikazu to find his 24-year old friend Tsuboi Manami (坪井 愛実) before July 27. Eri has special powers that can aid her with her detective work, however she avoids using them as much as she can.