This is story fictitious, and all characters are over 18, please see part 1 for the background, and part 2 about Susan.
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Michelle looked at Susan, and began, "We made a contract for me to be his slave. It spells out what he will do for me, above and beyond my working with him. It also describes some things that I can and can't do, and some things that are required. (a copy of The Rules have been added at the end of part one) When I break a rule he has the right to discipline me, and I broke a rule tonight." She paused and I indicated that she should continue. "So, Master is going to paddle me for breaking the rules."
"What rules?"
"I seduced you without permission, I think."
"But that's not her fault!" Susan glared at me. You shouldn't punish her for something that was my fault! If you're going to punish anyone you should punish me, I led her into it."
"That's not exactly what it's for, and I'm not punishing her, I'm paddling her for breaking a rule. She will learn better control as my slave this way."
"But you can't!"
"Yes Susan, he can. He's my Master. Please, don't make this worse. Let him do it and we can get back to making love. Please?"
"No!" Susan yelled. "If you're going to paddle her then I demand to be paddled too. It's my fault and I insist that you paddle me too."
I looked at both of them and made a decision. "Alright, if you insist. Twenty-five strokes each. Michelle take your new friend to the bathroom and explain to her what's happening and what I expect, then come back here and assume the position of contemplation in preparation while I get things ready."
Michelle grabbed Susan's hand. "Come on. I'll explain in the bathroom." They got up and left, although Susan shot me a look over her shoulder. Michelle closed the door and I opened the cabinet and got out the paddle and plenty of rope. As I was tying the ropes to the foot of the bed they came out.
"Position yourselves in the doorway. Slave, explain what you're doing." They knelt and I walked over and laid the paddle in Michelle's open hands. "Explain."
"I kneel and contemplate exactly what I did wrong so that I come to the paddling with a full understanding of what happened and why, and how not to make the same mistake again."
"Excellent Slave. Now both of you, contemplate in silence while I prepare." I went back to attaching the ropes. When I finished I looked at Michelle and Susan and admired their calm beauty. "Slave, you first. Hand Susan the paddle."
Michelle laid the paddle in Susan's hands and walked to the bed. "Explain to me why you're being disciplined."
"I seduced Susan without permission, and I had sex with her without you being able to observe, Master."
"Excellent. Assume the position on this side, Slave." Michelle leaned over and I tied her feet wide apart. "Now you Susan, since you insist on participating." Susan stood and walked over slowly and handed me the paddle. "Assume the position here." I pointed and Susan lay across the foot pad and I tied her feet also. I climbed on the bed and cuffed both their hands then tied the rope to Michelle's cuffs. I looped the rope through Susan's cuffs and made a slip knot, which I then pulled tight, lifting them both off the bed. I stepped back and picked up the paddle.
"I am going to alternate between you, giving each of you five strokes then the other. Remember Slave, silence during discipline."
"Yes Master."
I raised the paddle and brought it down sharply on Michelle's ass. Susan jumped almost as much as Michelle. I saw them looking into each other's eyes. I gave Michelle her five then started Susan's first five. "Your turn Susan."
"Yes Sir." And the first stroke hit. Susan gasped, but said nothing. I applied all five and went back to Michelle. As I progressed through their strokes they kept silent and let their heads hang. As I neared the end I noticed that, as before, there were wet spots on the bed below Michelle's face, and also below Susan. I noticed with some amusement that they were also dripping elsewhere. I finished Michelle's twenty-five and announced it to her.
"Thank you, Master." She sobbed.
I stepped over and completed Susan's and told her, "Twenty-five Susan."
"Thank you Sir." She sobbed out. I looked at my throbbing cock and Susan's dripping cunt and shoved it inside her.
She gasped and said, "Thank you Sir." I fucked her several quick strokes with it.