Sisters-Vedims. Sister of the Moon

The battle continues. The superiority of the army is undeniable. The demons managed to break through the barriers, long ago erected by magicians. The world of people is about to crash. Magic is no longer able to restrain the dark forces.
Vianna, together with the sisters, are now captured by the Supreme King of Regulus. He prepared an unenviable fate to the girls: against the will to marry their demons. Witches will be released only if Vianna brings magical artifacts to regulus, which will help him increase his power.
Vianna has only three months to save herself and sisters. Otherwise, Regulus will carry out an insidious plan. But only where artifacts are stored, Wianna can find his death. And there was no one left next to her to whom the girl could trust