 If you liked
Kara no Kyoukai Movie 4: Garan no Dou
|
 ...then you might like
Subete ga F ni Naru
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Both anime have a similar feeling, both are psychological with philosophical content and discussions. Both anime have a main character that has more personalities than 1, both are called Shiki and both are very mysterious and hard to figure out.
Both anime have a mysteries to solve.
Main difference; Kara no Kyoukai deals with magic, Subete ga F deals with online/high tech things