Sex, Lust and remorse

The new Mark was a feral incredible sex machine, but one of which Becky had complete control over. Every movement the beast made, every gesture and every action was in complete symbiosis with her body. He knew how to pleasure her before she could even speak, like a dark link existed between the two. He was once again fucking her in the ass with his beast of a dick, spreading his cum all over her legs. She tried several times to remember she was fucking Mark, a person whose life she completely ruined but each time she tried to think about her actions her mind was completely overwhelmed with lust and more desire.

-Stop, I want to try something different...-

The beast immediately obeyed, his eyes two flaming dark stars. He stared her body, finally pulling away his dick and his tail from inside her. For Becky it was like losing a part of herself, as her mind was once more getting overwhelmed by the need to be filled.

"What's happening to me? "

"Your body is hungry. Satisfy this hunger"

Mark lied down on the bed, his massive permanent erection on full display; Becky looked at Danny, stuck in a similar position by the beast's poison.

-Grwwwll...-

Becky could resist no more, and quickly set down on Mark's cock; it felt alive, like another beast inside the beast. She immediately begun to ride it, moving her hips quickly. Immediately Mark's tail was once more wrapping around her body, caressing her nipples and twisting around her huge boobs. Becky's mind was completely overwhelmed by lust, as every thought now revolved around fucking that beast in front of her.

"I told you that you'd like it, my sweet child. And here you are, enjoying this power"

"Shut the fuck up... Oh god"

Mark's phallic tail had reached her mouth, caressing her lips. Instinctively she opened her lips taking the cock-like thing deep inside her throat. It was no longer a conscious action, fucking had become so much a part of her life that now she was moved solely by her instinct.

"Fuck him. Fuck him well. Feed me. Our hour is almost come. The time of darkness."

Mark came inside her once more, overflowing her with his fluids. She looked him in his eyes, but she only found two holes as deep and black as hell itself. For a moment there was nothing around her, the room, Danny, they all disappeared. There were only her and the monster, and once more fear took control of her hearth. The black horns, the rock like skin and that monstrous tail appeared to her as what they really were: horrible products of a devilish ****, an unnatural mistake. She jumped in horror away from Mark, with his white cum dripping from her beautiful legs and her pussy; she was so quick that she lost focus and fell down on the cold floor, hurting herself in her back.

"This is all wrong. It was fine having the perfect body, but I just destroyed Mark's life."

"You did what you thought was right. Danny was the one suggesting you this path, remember? Leave your regret behind."

"SHUT THE FUCK UP! YOU MANIPULATED ME!"

"On the contrary, I freed you. I freed you from moral, lies and let your true nature be free..."

-Shut up! Bring me the book!-

She didn't know who she was talking to, but mysteriously Mark got up from the bed, looked her deep in the eyes and quietly went towards the book, which lied opened on the floor near Danny's head. He seemed hypnotized, executing Becky's order with tacit precision, crawling on the floors until his hands reached the book.

"What's happening?"

"I told you. I empowered you. He's your ****, not mine. He's doing as you ordered him"

Mark, still in complete and inhumane silence, brought the book to her, like an offer to some divinity. Becky was turned on by that action: the beast's body was bent towards her, the book firmly in his hands, his neck peacefully resting on his shoulders. She understood for the first time what her new body could give her: the power of being worshipped. An orgasm triggered by the book's dark magic rocked her hips, causing her to cum directly on the floor.

"You're lying... You want to make me your ****, your pawn!"

"You know this isn't true!"

"I'll destroy you! You fucking piece of shit!"

"You can't run from yourself. Accept the bond, and you'll learn how a soul tastes..."