 If you liked
Sugiru Juunana no Haru
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 ...then you might like
Another
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Both manga make use of a very similar story which pits young people in positions of danger as they try to escape an inevitable curse they are forced into. From there as the character make attempts to escape the inevitable questions revolving around identity, the who and what, come to cause. So if your looking for another creepy short horror tale very similar to Another I suggest you go and read Sugiru Juunana no Haru.