If you liked
Higurashi no Naku Koro ni Kai
|
...then you might like
Steins;Gate
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Both Higurashi and Steins Gate carry this notion of correcting time to create the perfect world. Both the main protagonists have to figure out what keeps making their world go wrong and when sent back in time have to use their accumulated knowledge to predict the best possible solution. In this situation the comparison is between Rika and Okabe, both finding themselves in similar situations bearing a great responsibility to protect their loved ones.
If you liked
Ano Hi Mita Hana no Namae wo Bokutachi wa Mada Shiranai.
|
...then you might like
Tasogare Otome x Amnesia
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Same concept on boy can only see a female ghost. Tasogare is very much based on the relationship with the main character and has a more comical yet darker side while anohana explores effect of death on ones life and how the ghost can effect everyone she's left behind. Both are a romance with a very likable ghost and are very enjoyable.