Ace Pilot Anime Zero Two And Hiro

The reasoning behind why hiro and zero two can pilot a franxx is explained later on in the series and shows why they are the only ones who can pilot with the other. Hiro was a successful subject of the parasite program who easily became friends with his peers whereas zero two was an experimental subject with animal features continuously tormented to research her regenerative abilities her only comfort being a picture book in her possession. Zero tsū also known as code 002 コード 002 kōdo 002 or 9 ナインイオタ nain iota nine iota is a fictional character in darling in the franxx a japanese science fiction romance and action anime television series produced by cloverworks and trigger.