Mira Komori was no ordinary child ever since she was born, for she was gifted with having beauty, radiant power and sweet blood, which is more sweeter than Yui's. Ever since she was adopted by Seiji, Yui disliked her the moment she met her and Seiji planned on killing her for he favoured Yui the most. But that backfired. Mira's childhood was the worst, but that soon will change when she and Yui go to the Sakamaki Mansion since their father had to go overseas for work. Will there be a new opportunity for Mira to have a good life for once, or will Yui end up making it a living hell?