A mysterious life form known as Savage is attacking the Earth, and there is only one weapon that can counter it: the Hundred.

To become a Slayer, a master of military arts able to wield a Hundred, Kisaragi Hayato enrols in the marine academy city ship Little Garden. However, Hayato feels a strange yet familiar sense of incongruity towards Emile Crossford, his room-mate who somehow knows him from somewhere. On top of that, as soon as he enters the school, he is challenged to a duel by the Queen, the school's most powerful Slayer, Claire Harvey.

Source: ANN

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