Hate no Issen: Episode Zero

(Esta sinopse está em inglês. Ajude a comunidade traduzindo!)

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In the distant future, a war is raging between humans and the "Black Knight", an extraterrestrial invasion weapon.
After a fierce battle, the human race has the upper hand in the war and executes a last-ditch mission to wipe out the Black Knight.
In order to open up the future, the protagonist "Haru" goes to the battlefield...

(Source: Official YouTube channel)