Machikado Mazoku Mini

A series of shorts featuring chibi versions of the Machikado Mazoku</i> characters first released on the anime's Twitter and later on Blu-ray and DVDs.

In/Spectre Mini

Special shorts in chibi style posted on the official Twitter and later included in the Blu-ray release.

Runway de Waratte Mini

Shorts released online, including the official twitter account.

Eizouken Mini Anime

Chibi shorts posted on the official Eizouken twitter account. It was later included in the BD release.

Cells at Work! Specials

BD/DVD specials of Hataraku Saibou included in disc volumes 3-7.