Himouto! Umaru-chan R

Umaru Doma is a model student with a hidden side: when she returns home each day, she puts on her hamster hoodie and transforms into a lazy, junk-food-loving otaku. As Umaru continues these daily antics, her friendship with her classmates—Nana Ebina, Kirie Motoba, and Sylphinford Tachibana—deepens, and more and more interesting events begin to unfold.
Of course, these events lead to many questions. What did Nana ask Taihei, Umaru's brother? Who is the mysterious girl with the diamond hairpin? And most importantly: why does this girl seem to know Umaru? These questions and many more will find their answers in Himouto! Umaru-chan R!