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Square Enix

Games giant with a major manga arm — the Gangan family (Monthly G Fantasy, Big Gangan, Gangan Joker). Editorial offices accept email mochikomi and run newcomer awards per magazine.

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Magazines

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Square EnixJapan

Monthly G Fantasy

Home of Black Butler and Toilet-Bound Hanako-kun. Accepts email mochikomi — every submitter receives written feedback from the editorial staff.

ShonenFantasyMysteryMangaOne-shot

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Square EnixJapan

Monthly Big Gangan

Seinen monthly. Email mochikomi for finished manuscripts — an editor replies with written feedback in about two weeks, and standout work can be assigned an editor immediately.

SeinenFantasySlice of lifeMangaOne-shot

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Square EnixJapan

Monthly Shōnen Gangan

Square Enix's flagship shōnen monthly (Fullmetal Alchemist, Soul Eater). Runs a monthly manga award; details on the official award page.

ShonenFantasyActionMangaOne-shot

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Square EnixJapan

Monthly Gangan Joker

Shōnen monthly with a dark-fantasy and school bent (Kakegurui, Higurashi adaptations). Newcomer award submissions via the official award page.

ShonenMysteryHorror+1 moreMangaOne-shot

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Square EnixJapan

Young Gangan

Seinen biweekly (WORKING!!, slice-of-life and gravure mix). Runs the Young Gangan Monthly Manga Award and accepts mochikomi — see the AWARD section of the official site.

SeinenComedySlice of lifeMangaOne-shot

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