My-Hime

The story centers on Mai Tokiha, a seemingly ordinary high-school girl who has recently transferred to the prestigious Fuuka Academy with her younger brother, Takumi. The elite Fuuka Academy harbors a number of mysteries, involving both fellow students and staff. As they arrive at the Academy, Mai finds herself bound to a Child, a part-spiritual, part-mechanical creature, that can only be summoned and controlled by girls with the HiME mark.