Fushigi no Kuni no Miyuki-chan

A short OVA parody created by CLAMP set in "Alice in Wonderland" universe 

Both series are distorting two literary classics. Miyuki-chan in Wonderland the two works of Lewis Carroll (Alice in Wonderland and Alice Through the Looking Glass) and Ikkitousen the Chinese classic 'Romance of the Three Kingdoms'. Miyuki is well reflected in the intent of referring to books, while in Ikkitousen is just one mension that is heard only rarely. 

Both series are inspired (more or less) by "Alice in Wonderland". Thought Miyuki-chan In Wonderland is more like Ecchi version of "Alice in Wonderland". While Pandora Hearts is Shounen, which contain also element from other titles, like for example "The Wizard of Oz". 

Clamp's ventures in the isekai genre. Miyuki finds herself in a wonderland of half-naked women, while Hikaru, Umi and Fuu end up as warriors against a powerful lord; each seifuku heroine must face perils and strange creatures while figuring out how to go back home. Although one is a PG-13 involving mecha and the other is R-rated GL/ecchi, both works are more comedy-centered and light-hearted than the typical Clamp lore (and were also produced in the same years).