: Once home, she transforms into a "chibi" version of herself, donning a hamster hoodie and indulging in video games, anime, manga, and junk food like potato chips and cola. Key Characters and Dynamics
: Umaru's shy friend and neighbor who is unaware of Umaru’s home persona. Himouto! Umaruchan
: Umaru’s hard-working older brother who manages their household. He acts as the grounded foil to Umaru's eccentricities, often tasked with cleaning up after her and encouraging her to be more responsible. : Once home, she transforms into a "chibi"
: A hyper-competitive, boisterous classmate who views "Outer Umaru" as her primary rival. Real-Life Inspiration and Legacy : Once home