Unsure and cautious

The door closes and you hear a giggle.

"Quiet Miriam, someone could be in here." The male voice sounds young and weak.

"Jimmy, it's okay," Miriam whispers, "if there... oh..." She stops and you look around to see a redheaded woman, towel wrapped around her, staring at your back and ass. She is almost at the stage of drooling. "There a... woah, umm... hi?"

She hasn't noticed Molly and the manager working on your increasingly large cock (stretching to 11 inches and thicker than they have experienced). "Hello Miriam. You like what you see?" You tighten your ass muscles and Miriam strips off her towel. Jimmy, distracted by the two women sucking and licking your cock, starts to stroke his cock through his towel. "Lock the door Jimmy..." you say in a soothing voice. Jimmy does so and strips off his towel.

You have complete control over the situation and decide it is time to shapeshift into your normal demonic form. They all watch in awe as your skin becomes more muscluar, defintion enhanced all over. Your phallic tail grows out towards Jimmy and Miriam, exposing two thick phalluses on the end. Your hair extends to a bright white and your yellow eyes entice Molly and the manager. Your cock has extended more to 14 inches and as thick as Molly's forearm. You stand there with the women admiring your physical prowese and Jimmy, jealous but eager to join in the fuckfest.

Jimmy lies on the ground with Miriam sitting on his tiny 6 inch human cock. The manager sits on Jimmy's face, enjoying the human tongue lick her pussy. You place yourself in front of the manager and Molly as they continue to suck on your massive cock. Your phallic tail reaches around to Miriam and she sucks one of the ends with amazing suction.

After some time fucking and sucking, you move the slaves around. The girls line up their asses against the seat in the sauna. Jimmy starts fucking the manager. You move behind Miriam and slide your cock into her tight human pussy. She screams in pain and ecstacy. Molly receives both ends of the tail into her ass and her pussy. You and Jimmy thrust in unison as you feel the demon sperm rises. You reach over to Jimmy and bite him hard, making him cum and injecting the Lilith Strain via his bloodstream. You cum inside Miriam and Molly. They scream in agony at first and then laugh. The demon cum seeps out of their pussies and onto the floor of the sauna.

You stand back and watch each of the new recruits writh, masturbate and contort into their demon selves. Miriam is first and is stunning as a succubus. Molly is next and her athletic body fits the succubus mould well. Jimmy and the manager continue to fuck at high speed, transforming as they go. The four souls excape their bodies and you feel the energy. Molly's strength, Miriam's fiercness, the manager's intelligence and Jimmy's stamina all become a part of you.

You are continuing to become stronger; stronger than other incubi before you. You open the door of the sauna and theough the steam is a sight to behold.