That, huntress, is pheromones. It will make you highly aroused, specifically hungering me. Oh, and it has the interesting side effect of making you all the more fertile. My seed will take root in one of your eggs, and you will bear my young. Of course, you can expect more screwing up till the days surrounding your birth, of course. The demon's tone was oddly conversational, even as it continued thrusting and playing. The tentacle seemed to almost get harsher, diving deeper and deeper into the girl, as if testing to see how far it could reach. The needle only made it easier for the long limb to plumb the depths of the girl. Soon it may even sink into the girl's flesh on accident, somewhere deep inside. Such an insertion would be painful, though the leaking of pheromones might actually be pleasing to the girl.
The demon himself felt his climax approaching. it swelled within him, actually causing his member to bulge slightly at the base. the lack of a sack only meant that the seed was produced elsewhere, then funneled through the shaft. With a great roar, the demon thrust hard and wild into Lilia. his great member hit deep within her, splitting her, parting her small body even more. Then the bulge shot upward. Her lips would part around the seed, the force of it not giving her an opportunity to resist. Jets upon jets would course along the shaft, shooting into the girl with enough force to be felt. It would hit her walls, hit her womb, and fill her as even the hellhounds had not managed. All while the hard, thick shaft slid along the mixture of fluids within, the squelching almost as loud as the roars and moans of sexual pleasure.
As if realizing what was happening, the tentacle in her ass responded as well, jetting pheromone in a spray that was more like a hose than the pumping of the semen. The needle, aimless, stung at the walls of Lilia's tunnel, leaving small marks, holes that, while invisible to most detection, would allow for the pheromone to directly enter Lilia's bloodstream, effectively poisoning her with lust.
The hellhounds howled with their master's pleasure.