The official website for the anime film of novelist Osamu Sōda’s Bokura no Nanokakan Sensō (Seven Days War or Our Seven-Day War) novel unveiled a teaser trailer and visual for the film on Tuesday.
The teaser reveals the film’s December opening date, and that the studio Ajia-do is working on the film.
Kadokawa Shoten published the novel in April 1985, and the novel inspired a live-action film starring Rie Miyazawa in 1988.
Sasaki Aoko launched a manga adaptation of the novel in Kadokawa’s Monthly Comic Gene magazine on April 15.