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

The story of the anime will revolve around Dreamcast, Sega Saturn, and Mega Drive, who have just enrolled in SeHaGaga Academy at Tokyo's Haneda Ōtorii station. They are given an assignment needed to graduate by a suspicious teacher, and to clear this assignment, the girls need to enter the world of Sega games. The girls must try their best to graduate without incident. (Source: ANN)

Born and raised in the countryside of Japan, Hinako Hina Sakuragi gets anxious easily when she talks to new people—so much so that she resembles a stiff scarecrow. To overcome this, Hina hopes to get involved in theater, inspired by a play she saw during her school's field trip. So, Hina moves into the Hitotose Manor in the bustling city of Tokyo to study at Fujiyama High School, aspiring to join the school's renowned theater club. But to Hina's dismay, she learns that Fujiyama High's theater club has been on a lengthy hiatus. Having already come to Tokyo and enrolled in the school, Hina is at a loss for what to do next. Sensing her disappointment and eagerness to learn theater, Chiaki Hagino, the landlady of Hitotose Manor, encourages Hina to create a troupe with the residents of Hitotose Manor as its members. Hinako Note follows Hina as she begins a new life in Tokyo attending Fujiyama High while learning the ropes of theater with the support of her friends along the way.

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!