In a distant Island, people suffer from a strange disease called "Pinocchio". This disease causes patient's limbs to rot, and before long, leads to death. But disease can be cured by using artificial limbs or "exchanging" limbs of people with special antibodies. These people with the antibodies, who only exist one in ten-thousand, are called "Doner", and their bodies considered national treasures. One day, Dorothy, a Doner, exchanges her precious right eye for a male Plastica(robot servents) who was about to get thrown away. Their meeting sparks the beginning of a story of a strange master and her strange Plastica. [ruggia]

Summary from MangaHelper

The story centers on a sophomore named Kanako who enrolls in all-girls school because she has a phobia of men and wants find her destined yuri partner. She meets a captivating freshman named Mariya who fits her criteria — except her seemingly ideal mate happens to be a cross-dressing sadistic boy.
(Source: ANN)

A young girl named Rahzel is booted out of her house one day by her father with the instructions to 'see the world.' And so her journey begins, However, she won't be doing it alone ... for she befriends a stoic young man named Alzeid seeking revenge for his father's murder.
Alzeid and Rahzel are like oil and water ... but even still, they feel strangely drawn to one another. This could be either the result of an underlying attraction -- or their shared powers with magic. And so, the two reluctant allies travel from town to town, using their powers to help the helpless, while discovering their own respective places in the world.
(Source: Tokyopop)