Kadokawa Shoten published Sōda’s Bokura no Nanokakan Sensō (Seven Days War or Our Seven-Day War) novel in April 1985, and the bestselling novel inspired a live-action film starring actress Rie Miyazawa in 1988.
The Seven Days War novel inspired an anime film in 2019.
Novelist Osamu Sōda died on April 8 at a hospital in Nagoya due to pneumonia.
According to Sōda’s family, his condition suddenly deteriorated after he was hospitalized due to a cold on April 4.