People often hide their true selves, and Umaru Doma is a prime example. Despite her bright smile and perfect grades, she keeps a secret. She appears to be the flawless high‑school student everyone admires—until she steps inside her house. The moment the front door shuts, a different side emerges. Wearing her hamster‑themed hoodie, she swaps polished scholar for a laid‑back junk‑food lover, delegating chores to her dutiful elder brother Taihei. Whether she"s chilling with pals Nana Ebina and Kirie Motoba or battling her self‑declared foe Sylphinford Tachibana, Umaru knows how to unwind and savor the moment.
Himouto! Umaru‑chan chronicles the everyday escapades of Umaru and Taihei as they support—and tolerate—each other to the best of their abilities, while celebrating the unbreakable ties that bind friends and siblings. Their bond grows stronger with each shared joke and heartfelt conversation.