The video combines footage from the upcoming anime film and the original 1988 live-action film.
Sasaki then launched a new manga based on the film (as opposed to the original novel) in Kadokawa’s Monthly Comic Gene on August 16, and it will end on Friday.
Kadokawa began streaming a video on Tuesday for the anime film of Osamu Sōda’s Bokura no Nanokakan Sensō (Seven Days War or Our Seven-Day War) novel.
Aoko Sasaki launched a manga adaptation of the novel in Kadokawa’s Monthly Comic Gene magazine on April 15, and ended it on July 13.