In/Spectre Mini

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

Katarina Nounai Kaigi

A series of chibi shorts posted on the HameHura twitter introducing the anime.

Eizouken Mini Anime

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

Runway de Waratte Mini

Shorts released online, including the official twitter account.

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.