Rasetsu Hyuga isn't your typical 18 year old. With the ability to banish evil spirits, she works as an exorcist and hopes this will keep her mind off her fateful 20th birthday. Just three years ago, Rasetsu caught the attention of a powerful spirit who claimed her as his own. With a vow to return on her 20th birthday, he brander her with the mark of a rose on her chest. Unless she can find true love by that date, she will be his forever.