Ohime-sama Dakko ~Tenshi ni Oshioki~

There were two very beautiful princesses in a certain kingdom. Suddenly a mischievous witch placed a curse on them. King summoned his most powerful magician to try and lift the curse. To amateur eyes the magical ceremony would look like violation of princesses. And so the day of the ceremony has come. Will princess recover and live happily?

[From vndbreview]