 If you liked
Ore no Imouto ga Konnani Kawaii Wake ga Nai
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 ...then you might like
Romantica Clock
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-Both siblings don't get along and hate each other
-Both main girl sibling character ends up in a complected situation, and that situation helped bring them closer together
-Both characters begin to slowly understand each other
-Both siblings character in both animes are very similar personality traits
-Both animes are romantic and cute
-Ore no Imouto doesn't really have much incest, but the other one is pure cute incest