When an alien force attacks Earth, a giant sword falls onto the campus of Paradise Elementary School, transforming it into a flying vessel. The fate of the planet lies with one group of kids who must pilot powerful mecha to stop the invaders before it's too late!

Source: Anime-Planet

Note: originally planned as a TV anime series, but ended up being a promotional video for its manga serialisation on magazine Monthly Daiteioh.

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Same characters: Nekketsu Saikyou Gozaurer
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