Who needs him?

You lick your lips at the thought of his nourishing soul; you and the impending succubus at your crotch will savor the meal.
"****! Bind the mortal male!" you bellow, pointing a talon at her former husband.
"Yes, Mistress," she moans, walking to him and dragging him slowly toward their bedroom. She pulls him through the door with slowly blossoming strength, and throws his still-**** body onto the mattress.
"What do you have to bind him?"
She walks over to the locked nightstand, and effortlessly snaps the drawer open. You gaze in to see handcuffs, a riding crop, silk scarves, and other instruments of sexual ****.
"Impressive," you moan. "He's used these on you before, hasn't he?"
"Yes, Mistress," she groans as she roughly latches the cuffs around his wrists and the bedpost. "I hate him for it. He treats me like a fuck toy. Not like you, Mistress."
You lick your lips in delight as you slash away his clothing and bind his legs spread-eagle to the footboard. As you do so, you work your tail deep into your ****'s vagina, drawing moans and gasps of sheer lustful ecstasy.
"You will know great pleasure," you whisper in her ear, "but you will forever be my ****."
She doesn't respond as you continue to break her spirit, fucking her roughly with your tail and climaxing multiple times yourself, but not allowing her to cum for a long time.
Her body begins quivering sharply; she is going to turn very soon.
"Take your meal," you hiss, guiding her onto the bed and down onto his shaft.
She screams in delight as her inflamed vagina sinks around her ex-husband's cock.
"Cum...make...me...cum!" Furiously, she rides him, trying to make them both orgasm. You take her in a deep lesbian kiss as you grind your pussy against his open mouth, readying yourself to take the pleasure of absorbing two souls at once.
"Mi...Mistresssssss!!!!!" her body and mind snap with the shockwave **** of her climax. She clenches down on the mortal's penis, and you feel his life **** ebb. His eyes snap open as he cums, shaking from his **** throes.
You open quivering eyes to watch her transform, delighting in her reddening skin and pointing ears. Her brown hair grows long and brilliant fiery red, hanging down to the firm ass that now sports a penis-headed tail. A serpentine tongue dances around yours as teeth sharpen into menacing fangs.
The man below you ages and seizures, while you and your sex **** are invigorated and youthened by his soul energy. Her hairless snatch clenches around her meal, greedily drawing his life away. She digs her claws into your shoulders, drawing blood as you crush her expanding tits and over-sensitive nipples. She moans as onyx horns and gargoyle wings billow forth, and opens eyes of pure demon fire to gaze lustfully at her Mistress.
"Mistress...I feel...so incredible!" she moans deeply.
"And that was just the beginning," you snarl, "so much more awaits, fallen one."
The pair of you dismount the soulless husk and spend several more hours screwing around the apartment. Soon, you decide to find another to join your demon harem.