Hundred follows Hayato Kisaragi, a boy who survives a Savage attack and discovers that he has the highest compatibility with Hundred, humanity’s only dependable weapon against the extraterrestrial monsters. That rare ability sends him to Little Garden, a battleship-based military academy where students are trained to use the system and stand against the threat closing in on the world.
Life at Little Garden is intense from the start. Hayato is pushed through combat drills, technical training, and constant rivalry, all while trying to adapt to a school that mixes battlefield preparation with the usual tensions of student life. As he settles in, he becomes entangled with several female classmates and is repeatedly caught up in strange incidents that disrupt the academy’s routine. Between demanding lessons, fragile alliances, and the ever-present possibility of another Savage attack, Hayato has to learn how to survive Little Garden and prove that he can help defend humanity’s future.
