Himouto! Umaru-Chan Manga Volume 12

Himouto! Umaru-chan Manga Volume 12 features story and art by Sankakuhead.

Umaru and her friends, plus their big brothers, take off on a big group trip to Hokkaido for summer vacation! Little do they know, unexpected encounters are about to change their sibling dynamics. Then, when they return, our favorite himouto has one more secret to share!