The woman Tantei that the Tenkai Hotaru runs the Tenkai Tantei office. With Yayoi Mizuno of the assistant, worked hard for the destruction of the crime to a weapon with a brain and own body which I cut day and night. The Erika of the friend of the Yayoi comes in such a case. Say that a beauty product is sold by the company where I distributed a sample to in exchange for a questionnaire and is troubled with payment. Should have been cases to be settled if I do cooling-off, but, as for this case, the Koto which is a complicated thing related to a future dream of the Erika is found out.