If you liked
Higurashi no Naku Koro ni
|
...then you might like
Gakkougurashi!
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Both are really good at switching between the genres of moe/slice-of-life and psychological/horror. Both also center around one or more of the characters being delusional and hallucinating things that aren't there, many of the times making the viewer not know what's happening in real life and what's just part of the character's imagination.
If you liked
Danganronpa: Kibou no Gakuen to Zetsubou no Koukousei The Animation
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...then you might like
Ansatsu Kyoushitsu
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Non-human teacher forces students to become killers. Danganronpa is darker though, while Ansatsu is more of a comedy. Both also have a lot of mystery surrounding how the students got put in their situations in the first place. Both also have really fun animation/art styles in it too.
If you liked
Gokukoku no Brynhildr
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...then you might like
Charlotte
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Teenagers who secretly have superpowers team up with each other to try to live a normal life while helping out other teens like them. They also are trying to avoid getting caught and experimented on for having powers.