If you're looking for anime similar to Fire Force Mini Anime, you might like these titles.
Chibi shorts for The Demon Girl Next Door published on the official Twitter account for the series.
Chibi shorts for Record of Ragnarok II published on the official Japanese YouTube account of Warner Bros.
Centers on the everyday struggles of the lackeys of Shocker, the villain organization in the original Kamen Rider series.
Chibi shorts for My Tiny Senpai published on the official Twitter account for the series.