Cum!

He grinned. She'd remembered. He fucked her faster. "Yes, toy. Cum like the little slut that you are."

"Yes!" she cried. "I'm... I'm a... a slut! I-I'm cumming!"

She clenched her legs together, and her muscles strained, grabbing Lucas' cock so tightly he had to stop moving. A heartbeat later, she screamed as a powerful climax rocked through her body, sending shivers of blissful vibration through her asshole. Lucas could hold back no longer and his own orgasm arrived before he even knew it. He groaned, holding her shoulders tightly as he **** himself in as deep as possible, rope after rope of thick cum shooting into her ass.

He kept himself inside until both of their orgasms finally subsided.

"You're a wonderful slut," he whispered, leaning in and pressing a jarringly tender kiss on her cheek. "Stay right here, don't move a muscle, you hear?"

She mumbled something unintelligible, he wasn't sure if it was in response to his command or not. Slowly, he drew back until his prick slipped out of her ass. It remained slightly open, twitching and yawning as a trickle of cum began to drip out of it, while white streaks of Eldwyn's own emissions were splattered across the back of her legs and on the floor between them.

Lucas sat down in his kitchen with a hunk of slightly stale bread. He hadn't been home much lately, and it showed in the state of his pantry. He tore off a piece with his teeth and munched on it contentedly. Today had been a good day. Kythril seemed past all denial. Something told him she would be paying regular visits from now on. He pondered what he had offered Eldwyn. To have one sister **** the other in front of him, and to have both of them love it... the thought alone was enough to cause a stir in his loins.

He looked down. Sure enough, he was growing erect once more. He couldn't remember the last time he'd came twice in one day; years ago, certainly. He chuckled inwardly. There was some life in the old man, yet.

He finished the remaining bread, washed it down with a gulp of cool water, then headed back to the library, his erection leading the way.

It was dark now, and the city—or at least the neighborhood—had gone quiet, and yet it was not completely silent. He listened carefully. There was a high-pitched murmuring of people trying and failing to realize that whispers carried further than softly speaking under one's voice. He got to his feet and noiselessly snuck back to the library, halting just outside of the door.

He was tempted to peek around the doorpost, but while Eldwyn was facing away from him, Kythril would instantly notice him.

"I just don't understand," came Kythril's whisper. "He calls you names and makes you do all these awful things, and now he has you kneeling there like... like a dog. He isn't even here! I don't understand why you go along with it."

"I told you why," Eldwyn replied. "It's exciting when he orders me to do things. He always knows exactly how to talk to me and touch me. It's almost like he can read my mind. I can't explain it. And, well... I like him. A lot. It makes me feel happy to make him happy. Even when he tells me to do something scary, just knowing that he's looking after me makes me feel safe."

"So, if he asked you to cut off your hand, you'd do it?"

An exasperated sigh. "But that's just it, he wouldn't! I know he wouldn't. He wouldn't hurt me."

There was a brief shuffling sound and a barely-repressed groan of pain. "How can you be so sure? Look at me! Fuck, everything hurts..."

"You practically asked for it, Kythril."

"I didn't!"

"'Please hurt me, sir'," Eldwyn echoed in a surprisingly accurate impression of Kythril's voice.

"That... that wasn't..." Kythril trailed off. "I... I can't believe I actually said that."

"It's all right," Eldwyn said softly.

"No," Kythril replied, her voice rising. "No, it isn't. It's wrong, it's sick."

There was a long silence, then Eldwyn spoke up again. "A few weeks ago, he took me here. He... he tied me up, naked, and put a gag and a blindfold on me and just left me standing there. After a while he came back and grabbed me from behind. He said he wanted to show me to his friends like that. He'd barely even touched me and I... I almost came."

Another silence.

"You see? If you're sick, then... then we're both sick."

"I'm just scared," Kythril said, so quietly Lucas almost couldn't make it out.

"Don't be," Eldwyn replied. "You can trust him, I promise."

"That's not..." Kythril began, then sighed. "Ever since that first time he... he spanked me, I haven't been able to stop thinking about it. It's like an addiction. I... I don't think I can stop."

"Do you want to?"

Eldwyn asked intently.

"Yes. No. I don't know. I'm just scared I'll lose control of... of myself, I guess. It's all right when he's hurting me, good even, weird as that sounds, but afterwards, I feel... dazed, I guess, like..."

"...like you're not really sure what happened. Like it happened to someone else, while you were just watching."

"Yeah! Yeah, exactly," Kythril exclaimed. After a brief pause, she giggled distantly. "We're so messed up."

"Maybe," Eldwyn conceded, "but I don't want to stop."

"...Me neither."