Billy was trembling as he slowly opened the door to his step-sister's room. Inside it was dark, with only a dim nightlight allowing for vision. His step-sister was currently away at a friend's house, and his parents were out for a night on the town, leaving Billy alone to fend for himself at the house.
Specifically, to fend for himself against the incessant, wicked teasing of the mysterious woman who kept calling him when he was alone, and used the delightfully evil powers of Sex Magic to force him into humiliating situations. Billy, a twenty year old still living with his parents after dropping out of college, body still boiling with hormones, was absolutely helpless to resist his mysterious mistress's commands. No matter how much he tried to fight her wicked, unending teasing, his penis and testicles were all too ready to betray him, working with his mistress to coerce him into doing everything she said. If he didn't, well, all she had to do was think it, and he would be left drowning in a sea of agonizingly intense pleasure, with no hope for release.
"Have you gone inside?" cooed the sweet, seductive voice on his cell phone. Billy was naked, but needed his hands free, so he used an armband and ear bud headphones to carry the phone and listen clearly. He didn't need to respond. While she had him in her power, his thoughts were as clear as day to her. "Gooooood," she said huskily. "Now, do as I told you. Go to her closet."
Billy hesitated, trembling, his cock twitching in anticipation and defiance of his will. He swallowed hard. "Billy?" came the voice. "Continue into her room."
"I'm going to be caught!" Billy said in a shaky voice. "Please! Please don't make me do this!"
"Aw, you're not afraid of your sweet, innocent little sister, are you?" said his mistress. "She's not even old enough to have Sex Magic, is she? Although, she's not too many months away from turning nineteen. She'll get them soon enough. Heck, maybe she'll turn out to be an early bloomer and get them before!" Billy gasped as he felt two deep, wet, hot licks along his penis, phantom tongues keeping him just shy of the brink of orgasm. His mistress had been psychically licking him for nearly two hours as she broke down his will until he could no longer resist her orders. Now, all it took was an occasional lick to keep him right near the burning edge of release and to coerce him into further action.
The maddeningly frustrating part was that he couldn't even touch himself to try and finish the job. All it would take is a single stroke of his shaking hands, and he would shoot clear across the room. But he was unable to touch his own penis. Had been unable in the two and half years since he turned eighteen. His Step-Mother's rules.
Not that it would have mattered. Just to make sure he wouldn't get any ideas, his Step-Mother had also sealed away his orgasms. He was completely unable to cum, unless she, or another woman, cast a spell to undo the magic block. It was a small spell, she said, but its effects were absolutely devastating. She only permitted him orgasms a maximum of once a month, and she would often change her mind and make him wait even longer for any sort of perceived slight or defiance. And that was usually only the first level of punishment. As of now, it had been nearly four months since Billy's last orgasm. Almost as long as his mysterious mistress had been calling him and routinely teasing him.
Knowing exactly what he was thinking about, his mysterious mistress cooed again over the phone. "Aw, maybe that's why you're so afraid. You know Mommy will catch you. And she'll punish you again, won't she? How many more months will she deny you? Two? Three? Five? A whole year?"
Billy's cock swelled with shameful arousal at the thought of his Step-Mother denying him, embarrassed at how turned on he was by the thought, almost angry at how childish it made him feel. Sure, she wasn't his "real" mom, but she was his father's wife, and had helped raised him since his early teens. To have his Mother, even a Step-Mother, still control his orgasms now that he was in his twenties, it made him a laughing stock to all the women in town. Not that she cared. Particularly since, to his shame, his Step-Mother's control made him cross-eyed with lust. The fact that she was a walking goddess of a supermodel, and an expert cock torturer made it even harder to resist.
His new mistress took advantage of his arousing thoughts by giving him five more long, searing licks. Billy was on his knees, half in the doorway, his hips bucking futility, before the first lick finished. His penis clenched and jerked wildly trying to cum, but his mistress didn't even pretend to try and loosen Step-Mother's orgasm block.
His mistress let him pant and get himself somewhat back under control. As he stood and took his first full step into his step-sister's room, she gave him one more quick lick, and he almost stumbled to the floor again. Billy flushed a deep crimson, and his cock twitched again, as he heard his mistress's musical laughter over the phone. Embarrassing, but so arousing.
"Now, then, Billy, enough dawdling. You know what you need to do."
"Please... please, I'm begging you, don't make me do this..."
"Well, you don't have to do it, Billy. As always, you have a choice. But you know the consequences of choosing to disobey me..." Lightly, the phantom tongue returned, flicking playfully along his length, and Billy let out a choked almost-sob. Yes, he remembered quite well. An entire weekend, writhing on the floor of his room, the ghostly forms of five phantom women fucking him for hours non-stop, and never once being able to cum. The torment had ended only when his Step-Mother had returned from her overnight shift at the hospital. She had been very, very displeased to see her stepson engaged in sexual relations she did not approve of. She had immediately used her power to cease the magical assault on his helpless body from his mysterious mistress.
