Ava and Lilith - Succubus Final Exam

You are proctoring the final exams for new succubi. The final exam is a practical one letting the students use and show off the skills they have been honing and developing in class. Despite the simple objective of the practical exam, to make the proctor orgasm, a lot of hard work and training goes is needed to get a passing grade. Seduction, technique, stamina, and endurance are all qualities a succubus needs and things that will be tested. You will be proctoring two succubi sisters today. Will you be taking them in one by one or will this be a team effort?