The novel received an OAV adaptation titled Nana Toshi Monogatari ~ Hokkyokukai Sensen ~ (Seven Cities Story ~ Arctic Front ~) in 1994.
This year’s fourth issue of Kodansha’s Young Magazine the 3rd revealed on Monday that manga creator Ikumi Fukuda is launching a manga adaptation of Yoshiki Tanaka’s Nana Toshi Monogatari in the magazine’s next issue on April 6.
A moon-based colony avoids the disaster, and begins recolonizing the depopulated Earth by establishing seven cities in strategic locations.
When an unknown virus kills everyone on the moon, humanity becomes trapped on Earth, where the political intrigues of the seven cities continue to play out.