 If you liked
Kannagi
|
 ...then you might like
Hataraku Maou-sama!
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Although they are not similar in premise, both series involves a supernatural being who sets foot in the modern world. They are confused on how the present world world works around them but gets more used to it as they experience the modern life.
Both series has a lot of funny dialogues, gags, and interactions between the main characters.
There's also some action, drama, as well as misunderstandings usually involving the main characters.