These shorts, included in the Blu-ray and DVD releases, take place in a timeline with multiple Umaru-chans.

People are not always who they appear to be, as is the case with Umaru Doma, the perfect high school girl—that is, until she gets home! Once the front door closes, the real fun begins. When she dons her hamster hoodie, she transforms from a refined, over-achieving student into a lazy, junk food-eating otaku, leaving all the housework to her responsible older brother Taihei. Whether she's hanging out with her friends Nana Ebina and Kirie Motoba, or competing with her self-proclaimed rival Sylphinford Tachibana, Umaru knows how to kick back and have some fun! Himouto! Umaru-chan is a cute story that follows the daily adventures of Umaru and Taihei, as they take care of—and put up with—each other the best they can, as well as the unbreakable bonds between friends and siblings.

In the future, a new MRI technology analyzes the brains of deceased crime victims and eyewitnesses within 48 hours of their death to extract images of their memories. Although this cutting-edge technology is responsible for solving various murder cases, it has raised several ethical concerns, placing Section Nine—the police division in charge of the MRI investigations led by Tsuyoshi Maki—under considerable pressure from the media and the government. The team members of Section Nine are not only forced to witness traumatic events through the eyes of both victims and murderers, but they also need to negotiate with the victims' families, whose consent is required for the post-mortem MRI scans. Freshly graduated from the police academy, Ikkou Aoki joins Section Nine to replace Maki's best friend Katsuhiro Suzuki—a former member who passed away under ambiguous circumstances after watching MRI footage from a particularly morbid criminal case. As a stream of seemingly unrelated events creeps closer to the case of Suzuki's death, Section Nine will have to face its greatest challenge to date, threatening its very existence.

Umaru Doma is a model student who has a hidden side: when she gets home each day, she puts on her hamster hoodie and turns into a sluggish otaku fond of junk food. As Umaru continues these daily antics, the friendship between her and her classmates—Nana Ebina, Kirie Motoba, and Sylphinford Tachibana—deepens, and more and more interesting events begin to unfold. Of course, these events give rise to numerous questions. What did Nana ask of Umaru's brother Taihei? Who is the mysterious girl with the diamond hairpin? And most important of all: why does this girl seem to know Umaru? These questions and more will be answered in Himouto! Umaru-chan R!