One day, Nana, who had begun an investigation, goes missing. Taking advantage of an opportunity, he sends a message to a junior wrestler, Mika (Ayaka Mochizuki), containing a hidden message about Kurogane's important secrets. In a desperate attempt to help Nana, he consults with the president of her agency, but is treated carelessly, perhaps because he doesn't want to get involved in the case. Mika has no choice but to call the investigation bureau, but the person who answers is Aramaki, a corrupt detective who has secret connections with Kurogane. And Mika herself becomes a target...