Rure

Ha-Ru is the daughter of a family that rules a remote island--she is also the heiress to this secluded land, something that Ha-Ru's half sister, Mi-Ru, resents. When Mi-Ru becomes upset and runs away, Ha-Ru follows her--and magically they are ushered into a foreign desert! And in this land, it's survival of the fittest! (Source: linkTokyopop)

Rure had three volumes published in English by Tokyopop from October 9, 2007 to June 10, 2008, before the publisher went defunct.