Konoike Eishin, known as the Prince by his classmates, gets wrapped into the affairs of the mysterious and intimidating Senagawa Itsuki. After that, he just can't stop thinking about "Senagawa-kun".

Losing her parents and being supported by her childhood friend Chikage, Yuiko is living a modest life with her grandfather. But one day, a man with black clothes, white hair, and red eyes that hold a terrifying beauty appears before her. He says..."I've found you. My sacrifice..." Is there a way for Yuiko to resist her unfolding fate?