Orb: On the Movements of the Earth

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Orb: On the Movements of the Earth (Japanese: チ。―地球の運動について―, Hepburn: Chi: Chikyū no Undō ni Tsuite) is a Japanese manga series written and illustrated by Uoto. It was serialized in Shogakukan's seinen manga magazine Weekly Big Comic Spirits from September 2020 to April 2022, with its chapters collected in eight tankōbon volumes. Set in 15th-century Europe, the series follows the dangerous journeys of scholars who risk their lives to pursue research on the forbidden heliocentric theory. A 25-episode anime television series adaptation produced by Madhouse aired from October 2024 to March 2025. By February 2025, the manga had over 5 million copies in circulation.

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