- Author's Saving Throw: Many fans who followed the manga for its unique take on a sibling relationship were not pleased when it began to focus more and more on Umaru's social life rather than Umaru and Taihei at home (in particular, there was a span of about thirty chapters where the Doma house was not shown at all). With several detractors even claiming the Genre Shift into a Four-Girl Ensemble is to the series' detriment. Thankfully, the author seems to have noticed the criticism and has worked more Umaru and Taihei chapters in between the social ones.
- Base-Breaking Character:
- Umaru herself is this. Either she's adorable, relatable, hilarious, and the best portrayal of a female Otaku since Konata Izumi, or she's Heroic Comedic Sociopath.
- In some circles Ebina is loved for her Moe factor as well as playing an excellent Foil to Umaru. Others find her to be too normal compared to her wacky friends and detest her for her conspicuous lack of a backbone.
- Sylphynford Tachibana is either a cute Genki Girl whose misguided efforts to get Umaru's attention are always good for a laugh, or a one-note side character who is even more annoying than Umaru.
- Escapist Character: Umaru is this for many fans, being able to be perfect at everything outdoors, while regressing to gaming and lazing around indoors.
- Hilarious in Hindsight: One of this series' many Shout Outs is the "Gapcom" game center employee who looks like Ryu from Street Fighter. Then Street Fighter V Arcade Edition brought back fan favorite Sakura Kasugano, and her official story is that she now works part-time...at a Capcom game center. Like mentor, like student.
- Les Yay:
- Quite a bit between Kirie and Umaru, especially since Kirie has a pretty blatant crush on Umaru.
- There is also a bit between Umaru and Sylph. It gets turned up in later chapters due to Sylp miswording things like telling UMR-san "Thank you for going out with me" while in the middle of a date like scenario or spending an entire day trying to get UMR-san to play The Pocky Game with her while not even knowing what it is.
- Then to complicate things a bit both Kirie and Sylph have Les Yay with one of Umaru's alternate identities, Kirie with Komaru and Sylph with U.M.R.
- Memetic Mutation:
- The country owes me a big brother.Explanation
- Umaru on the front page! Explanation
- WHAT THE FUCK IS THAT THING Explanation
- "I'M LOVING HAMBURGERS!"Explanation
- The scene from the OP where various versions of Umaru dance in a circle has been widely copied with various characters from other series.
- Most Wonderful Sound: "Umaruuun"Explanation
YMMV / Himouto! Umaru-chan