Synopsis

In 2008, Kiryu Aoi’s younger sister was a victim of a serial murder in their hometown. Aoi, who discovered the body, was so shocked that she lost some of her memories from before the incident. Furthermore, Aoi’s father was arrested as the serial killer. After losing everyone, Aoi leaves her hometown. 16 years later, Aoi, now a detective, returns in order to chase the truth and prove her father’s innocence, but another incident occurs in the peaceful town. As Aoi, alongside her detective partner Kosaka Kei, pursue the truth, she discovers the hidden sides of her classmates with whom she had spent her youth.