Uryu Misaki

Koji carries an emotional wound from a missing childhood friend Sayoko, who disappeared when they were junior high school students. He left his hometown to forget about her and now, five years later, he goes to a grad school in Tokyo. One day, he gets a phone call from a former classmate and hears about the death of Sayoko's father. To attend his funeral, Koji returns to his hometown...

Izumi Sakuragi is a new police sergeant with the Special Investigations Office, which was set up within the Metropolitan Police in November last year. The new investigation team uses DNA analysis and the latest in forensics science to investigate cold cases as well as cases suspected to involve missing persons.