 If you liked
Haiyore! Nyaruko-san
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 ...then you might like
Tasogare Otome x Amnesia
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Similarities:
Same mysterious girl meeting ordinary boy kind of thing.
Same mysterious wants to bang the ordinary boy but ordinary boy is no yet ready to have his cherries popped.
Both have the same supernatural and school genre.
Dissimilarities:
The girl in one anime is a ghost while in the other the the girl is a deity/Extraterrestrial.
One anime has parody as its main genre while the other has mystery as its main genre.