Himouto! Umaru-chan is a slice of life anime that is about as mindless as lucky star. Its amusing but there really isn't any depth to it. I did get some enjoyment watching this anime but it was just a little too pointless for me to sign up for any other continuation of the series. Now I heard there's a manga, if someone could comment on this and let me know if the manga has a developing plot of interest then I'd be interested in looking at it. If it remains as mindless as it is now then these twelve episodes were definitely enough for me.
Would I watch this again if I knew it was like this? Eh, maybe if I had nothing better to do XD.
Really cute opening/ending.
Just no solid story.
Its basically like watching family guy or futurama, each episode has a different plot and usually not all that serious. That being said this anime is definitely a good match for some people out there; personally I just enjoy more girth to a story.