Kirie makes some cookies to give to Umaru, while Umaru and Taihei help Nana make some Valentine's chocolates, oblivious of who she wants to give them to. Later, Umaru and Sylphynford go to an anime shop together, bonding over their roles as little sisters who love anime. Afterwards, Taihei has to try and converse with Kirie while waiting for Umaru to come home, before trying to solve the mystery of who ate Umaru's pudding overnight.
- Umaru was referencing a mystery anime and game called Danganronpa by wearing her hamster hood with Monokuma's design when her brother Taihei was trying to solve Umaru's Pudding 'Incident'.
- She also made an 'upupupu' laugh like Monokuma.
- Meanwhile, Taihei was imitating Phoenix Wright from the Ace Attorney series.
|Himouto! Umaru-chan Anime Series|
|Himouto! Umaru-chan||Umaru and Her Brother | Umaru and Ebina | Umaru and Her Disciple | Umaru and Her Rival | Umaru and Summer Vacation | Umaru's Birthday | Umaru's Big Brother | Umaru and Christmas and New Year's | Umaru and Valentines | Umaru and Now and Once Upon a Time | Umaru's Everyday Life | Umaru and Everyone|