These shorts, included in the Blu-ray and DVD releases, take place in a timeline with multiple Umaru-chans.
Up to EP 13Alice Gear Aegis ExpansionAnime
Up to EP 12A Nobody's Way Up to an Exploration HeroAnime
Up to EP 13AMAIM Warrior at the BorderlineAnime
Up to EP 26The Irregular at Magic High SchoolAnime
Up to EP 26SlayersAnime
Up to EP 12I Parry EverythingAnime
Up to EP 1Hotaru KagayakuAnime
Up to EP 13My Clueless First FriendAnime
Up to EP 1Her Blue SkyAnime
Up to EP 10The Fire HunterAnime
Up to EP 12Asteroid in LoveAnime
Up to EP 10Haikyu!! 3rd SeasonAnime