Okuhara Natsu was born in Tokyo in 1937. In 1945, she loses both parents to war and becomes an orphan, but her father’s comrade, Shibata Takeo, takes her in and moves to Tokachi in Hokkaido. In ...

After her ex-cop father is murdered on Christmas Eve, Komugi finds a letter hinting at a dark conspiracy and teams up with a lawyer to uncover the truth.