Karasu Aoiro is not a normal girl like you and me. Her appearance may seem godly, but her aura is deadly. When in a hurry, people would run....Karasu on the other hand would teleport with no problems at all, and hiding in the shadows is something that can easily be done. Her homeland is the underworld, but she prefers a place full of life. That's right, she's a demon. Karasu's life is pretty typical for a 17 year old: school, homework, drama, social media, and so on. There is absolutely nothing new or exciting in her life as of now. Until one day, a strange letter appeared in her mail box, telling her to go guard a girl named, Yui Komori. But, was that the only reason why she was sent to the Sakamaki household? How will her rebellious attitude clash with the six brothers? Karasu had many doubts about this, but she knew one thing. Her life will never be the same again.