then moved down to her feet, removing his brown leather belt and using it to bind her ankles together before finally moving up, wrapping a rope around the back of her knees and looping it through the chair back. When the final knot was tied she fond herself immobile, frozen on her knees with her gushing pussy in the air and the black base of the butt plug poking from her ass.
Now Kathryn felt truly at Master's mercy. She couldn't see him, couldn't know what he was doing behind her until she felt his fingers at her asshole. He gripped the base of the butt plug and began to gently pull. The moment it began to shift, sucking wetly out of her pink, tender asshole, she felt the approach of another orgasm.
Master felt it, saw it in the tightening clench of her pussy, and placed the flat of his hand gently on her ass. "You may not come until I allow it. If you try to come before my cock has stretched your tight little ass I'll have to punish you. Do you understand?"
Kathryn whimpered, unsure if it was even possible to hold back a climax once her body had decided it was time. "I understand, Master," she said, hoping she could find the will, and she bit her lip so hard she thought she might draw blood.
The widest point of the plug spread her now, stretching ass her wide and producing a sensation far from the pain she felt as it went in. The moment the wide point passed she wished Master would push it back in, slide it in and out. Without that solid block filling her asshole she felt empty, incomplete, and as the tip finally slipped from her she felt her ring clench, relax and clench again, as if her ass was desperately searching for something to fill it once more.
"Did you enjoy that, Kathryn?"
A dazed grin spread her lips. "Yes, Master," she purred. "Thank you for helping me overcome my fear." She meant it. Just ten minutes ago she had been terrified of anything entering her asshole, and now she realized there was a whole new way to enjoy sex; it was almost as if she'd discovered a second pussy in her body, a second clit to stimulate.
What else could he teach me about my body?
She felt Master's fingers probing her tender, wet asshole, but now she responded not with fear but eagerness. "You're much more relaxed now, I see," he said, as he easily pressed his thumb into her ass. "Your pink little asshole is so beautiful. I can't wait to fuck it." Kathryn felt the thumb slip out, and Master placed a hand on each of her ass cheeks. She felt him use his thumbs to press down on either side of her hole, and as he pressed she could feel the muscles relax and tighten, relax and tighten, opening and closing her ring. It felt wonderful.
She didn't understand what he was doing until she felt the firm, wet tip of his cock on her tight button. She braced herself for the expected pain of his penetration, but it didn't come. Master simply held himself there, firmly pressed against her anus as it tensed and relaxed spasmodically, and made no move to enter her.
"Would you like me to fuck you, Kathryn?", he asked calmly.
"Yes! Yes, Master, please fuck me."
His cock slipped down suddenly, sliding from her asshole and between her legs, and Master powerfully thrust it once into her slick, gushing pussy, drawing it out again just as quickly before returning the firm, throbbing tip to her puckered ring. Kathryn's pussy twitched joyously, her swollen clit pulsating with pleasure.
"Oh, you'll have to ask more nicely than that, Kathryn. Remember," he said, punctuating the word with a light pat on her ass cheek, "If you come before I'm inside this tight little hole I'll have to punish you."
Kathryn whimpered. "Please, Master, please fuck me. I want you inside me now!"
Once again she felt his cock slip between her legs and force itself between her slick lips. Master's thighs pounded into her ass as he pushed himself deep before pulling out once more, leaving her empty. Her clit sent a warning, announcing the orgasm that she couldn't hold back much