 If you liked
Heart no Kuni no Alice: Wonderful Wonder World
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 ...then you might like
Kyousou Giga
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Both are alternative versions of Alice in Wonderland. HNKNA centers in harem/romance while Kyousougiga is a crazy random journey centered in adventure/supernatural/comedy. In both, the main girl who is transported to another world is voiced by the same voice actress. We also have twins and the White rabbit in both.