 If you liked
Hataraku Maou-sama!
|
 ...then you might like
Suisei no Gargantia
|
These anime are pretty similar in a lot if ways.
First, both the main characters come from different "worlds."
Second, they have to adapt to a new environment because society rules differently on Earth than where they came from.
Third, there is that carefree atmosphere in most episodes.
Last but not least, is that the main characters protect a lot of people in their new "world" I guess...