 If you liked
Shukufuku no Campanella
|
 ...then you might like
Shinryaku! Ika Musume
|
Similarities:
Both can be watch by children ages as young as 10.
Both have somewhat a meaningful slice of life.
Dissimilarities:
One can be watch with adult supervision, while the other can be watch by kid without any supervision.
One has a couple of mild encchi while the other one can be accepted since the setting is in the beach.