the truth of being buried, career agent jinguji tsumugi.

a mysterious couple's serial murder case. The only clue left in the field is the injection scars that remain on the neck. The hard-working investigation was also emptied and the case was about to get on a dark reef. In such a situation, the investigator Ayako tried to approach the truth of the incident by relying on her own intuition. i can tell the identity of the black curtain in a little while... However, one more step is to have an order to terminate the investigation. something is moving behind... it was a ladder that stood up alone to get to the core ... There was a danger to her.