Originally published in 1985, Bokura no Nanoka-kan Sensou was previously adapted into a live-action film starring Rie Miyazawa in 1988.
One summer the kids take over an abandoned factory and convert it into an impromptu fortress where no adults are allowed, leading to much confusion among the grown-ups.
Further details about the production (such as the cast, staff, format, and release date) have not yet been revealed.