Tate no Kuni

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

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A world stretching down from the heavens: the Vertical World. There lives a boy named Ruska, who finds himself fascinated by the world below. One day he sees a girl falling from the sky above, straight towards the bottom... And so begins his adventure surrounding the mystery of the Fallen Maiden!

(Source: MANGA Plus)