Nikaidou Koori

The youngest daughter of the Ashina siblings. A graduate student attending a prestigious women's university. The president's daughter, an arrogant sadist.

As a child, she was a crybaby who always hid behind her younger brother, but now she is a cold-hearted beauty who treats others as less than human.

Though she lives comfortably, she seeks her inheritance to gain independence from her step-parents. She schemes in the shadows to eliminate her sisters and turn her brother into her servant.

Will the day ever come when she rediscovers affection for her siblings and smiles innocently...?