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Kodansha to Publish Simultaneous Digital Editions of All Its Manga Magazines : r/manga

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Mag Talk - Monthly Shonen Magazine, Shonen Sirius - (Kodansha), Page 5

Weekly Shonen Magazine 2005 No. 6 Yuko Ogura cover Kodansha Manga Anime JAPAN

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Monthly Shōnen Sirius, Yozakura Quartet Wiki

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Monthly Shōnen Sirius, Yozakura Quartet Wiki

Mag Talk - Monthly Shonen Magazine, Shonen Sirius - (Kodansha), Page 4

Monthly Shonen Sirius February 2021 issue cover feat. Cells at Work and That Time I Got Reincarnated as a Slime to celebrate double TV anime broadcasts (HQ Ver.) : r/TenseiSlime