Maka from Soul Eater makes a reference to the Manga Ending in the Fire Force Mobile game! : r/firebrigade

Fire force and soul eater connections : r/firebrigade

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

How Fire Force and Soul Eater Are ACTUALLY Connected

Arthur Boyle, Fire Force Wiki

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

How Fire Force and Soul Eater Are ACTUALLY Connected

184 best Okubo images on Pholder Kengan Ashura, Soul Calibur and Grandorder

The Final Panel/Chaper of Atsushi Ōkubo's Fire Force has been leaked and it's interesting.

Fire Force / Characters - TV Tropes

Fire Force and Soul Eater Set Up Their Connection Way Before We Realized

How Are Fire Force and Soul Eater Connected?