Hundred

Hayato Kisaragi, a teenager who survived a Savage attack, has the highest compatibility level with the "Hundred" technology, a weapon capable of combating the extraterrestrial organism. This earns him a spot at Little Garden, a prestigious military academy on a battleship. There, he undergoes rigorous training for the impending battle against the Savages that now threaten Earth. His exceptional abilities also catch the attention of multiple female classmates.