 If you liked
Eden no Hana
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 ...then you might like
Sugar☆Family
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Sugar family is more lighthearted as compared to Eden no hana. However, they do have funny/idiotic brother and a cold(?) sister :) Both manga are similar one way or the other in terms of characters. But in terms of plot, they do have similarities and differences. If you like one, you would have like the other :)