Hundred

After humanity is struck by an extraterrestrial life-form called the Savage, the only effective countermeasure is a specialized weapon system known as “Hundred.” Hayato Kisaragi, a teenager who survived a Savage attack and possesses the highest known compatibility with the technology, is recruited to hone his abilities at Little Garden—a prestigious military academy housed on a battleship.

As his training intensifies in preparation for the coming conflict, Hayato quickly finds himself the focus of attention among several female classmates. Between academy life and a growing string of incidents, he is pulled into ongoing battles against the Savage creatures that have taken root on Earth and continue to endanger it.