The story revolves around a fifteen-year-old boy named Musashi and takes place during Japan's Sengoku period.

Musashi is blending in as a miner along with others, who are brainwashed into thinking that the demons are their saviors and fed lies about the samurai being evil.

Orient, written and illustrated by Shinobu Ohtaka, was serialized in Kodansha's Weekly Shōnen Magazine from May 30, 2018, to January 6, 2021.

[13][14][15] The manga was then transferred to Kodansha's Bessatsu Shōnen Magazine on February 9, 2021,[16][17] and finished on October 9, 2024.

[68] On January 13, 2022, Crunchyroll announced that the series will receive an English dub, which premiered on February 23.

Silverman praised the series for its iconography, adding that the demons are drawn with the same symbols and styling seen in Buddhist imagery, like bodhisattva with horns, fangs, and talons.

She added that Ohtaka's art improved with the series and appreciated her departure from the "boob jokes" presented in her earlier works, making the series feel "less juvenile while still being good for middle grade readers".