Despite thinking they were going to their grandfather's home for a celebration of their sixteenth birthday, Aya and her twin brother Aki quickly realize that something is amiss due to the funeral-like atmosphere. The birthday present they receive is not what they expected - a mummified hand. This mysterious artifact awakens a power within Aya and causes painful wounds all over Aki's body. To their shock, their grandfather Mikage announces that Aki will be the heir to the Mikage fortune and that Aya must die. Fortunately, Aya has allies in the form of the athletic cook and martial artist Yuuhi, as well as the attractive and enigmatic Touya. However, even with the help of these two handsome and resourceful guys, it remains to be seen whether Aya's uncontrollable power will ultimately be her downfall.
