this scene reminds me of a certain manga called himouto umaru-chan
gosh, you'r right! the similarity between mini Mari at the last panel and "Inside" Umaru is very big. (but their personality are completely different)
Updated
You...you mean this is my fault!?Squirm CrawlSagFirst, I have to finish up the washing.It's nice weather today. Maybe I should dry out the futons too.Hard to MoveWriggle
SquirmMmnngh...!Plop