Himekishi Lilia - Episode 6

Princess Lilia is next in line for the Kingdom's throne. But her brother, Prince Dirk, wants to become king very badly. In order to do so, he makes an agreement with demons who promise him the throne in exchange for his sister's hidden power, which can only be obtained by sending her to the highest level of sexual ecstasy. He ends up enslaving both Lilia and his mother, but will he be able to fulfill his agreement with the demons in time?