When Aoi Kiriyuu (Anne Nakamura) was a child, her mother died and her father then raised her alone in their suburban town. During the year 2008, a series of murders took place. One of the victims was the younger sister of a classmate that Aoi Kiriyuu liked. Aoi Kiriyuu was the person who found the body of her classmate's younger sister. Aoi Kiriyuu was so traumatized by the discovery that she lost some of her memories just before the incident. Making things worse, Aoi Kiriyuu's father was arrested as the serial killer. With no one left around her, Aoi Kiriyuu left her hometown. Now, 16 years later, Aoi Kiriyuu has become a detective. She returns to her hometown to prove her father's innocence, but another incident takes place. Detective Aoi Kiriyuu and her buddy detective Kei Kosaka (Yu Yokoyama) chases after the truth behind the case. She soon learns the hidden faces of her ex-classmates from her youth.
Where to Watch The Promise: The Truth from 16 Years Ago
Cast of The Promise: The Truth from 16 Years Ago
