Fire Force, Soul Eater Characters Team Up for Cross Promotion - Interest - Anime News Network

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How Fire Force and Soul Eater are connected

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Fire Force, Soul Eater Characters Team Up for Cross Promotion - Interest - Anime News Network

Fire Force: Magical Firefighting By The Creator of Soul Eater!

Fire Force: Enbu no Shō” x “Soul Eater” Collaboration starts on March 23rd! : r/gachagaming

New Fire Force x Soul Eater official illustrations from the mobile game collab!! : r/firebrigade

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Soul Eater Collaborates with Fire Force Enbu No Sho; New Visual Unveiled - QooApp News

Fire Force has been officially confirmed to be in the same universe as Soul Eater!! : r/AnimeAnonymous