Sunset

Hasebe Kaori is a rookie movie director. She consults with new screenwriter Kai Chihiro about her movie's screenplay. The script is based on the Sasazukacho Family Murder Case. While Hasebe Kaori and Kai Chihiro look into this murder case for their movie, a shocking truth is uncovered.

Kaoru and Mahiro head to Sasazuka Town to unravel Rikiteruto's past. Was it she, not Sara, who was the abused child in the same apartment when she was young? Meanwhile, Mahiro learns that the famous screenwriter Rinko Ohata will be writing the script for this movie in Mahiro's place

Kaori confesses that she made her film to confront her past, which involved the suicides of her father and classmate, and then leaves Mahiro. Meanwhile, a shocking fact related to the truth of the incident is discovered from the diary left behind by Mahiro's older sister, Chiho

The newly revealed fact that Riki Teruto and Chiho were lovers. Kaori and Mahiro search for the letter they exchanged, saying Chiho may be involved in the incident as well. Kaori heads to the location based on a photo left on Chiho's cell phone to reveal the final truth