Created as an homage to Hal Clement’s science-fiction classic Needle, 7 Billion Needles re-invents the sci-fi manga genre by mixing whodunit mystery with a very youthful cast of teenage girls. Hikaru is a strong-willed and self-reliant teenage girl, who does not shy away from danger or responsibility.

In this final volume, she must build up her courage to save mankind from annihilation at the hands of a highly-evolved alien race.