第 10 集: 無賴菌入侵，土間埋病倒；大平回憶起十年前的街機往事

10

Umaru gets sick, but it's a good thing her germs are as lazy as she is! Sadly, her germs show her brother no mercy. Later, Taihei remembers a day at the arcade, 10 years ago. (Source: Himouto! Umaru-chan Wiki)