A pair of twin sisters with cold personalities, IQ 250, lost their mother when they were young, but they are burdened with a vicious curse and the praise of an angel... One is an evil boy with a double personality, one is a sunny and lovely brother, and the other is a melancholy prince. When angel-like figures appear in front of them, will they be able to break the curse? Or leave as always, at an age like petals in high school, only to be met with heartbreak again and again... What will be the ending? The sad music has begun...