All the same, I did the responsible thing and quickly asked, “Do you want to stop?”
 
 “No! No!” Darby wept immediately. “Fuck me, sir, please! Fuck me hard! Punish me!”
 
 It wasn’t exactly the encouraging green light I wanted. It was a green light, though, and since I’d already pushed Darby into heat, I had to do the responsible thing and take him the rest of the way through it.
 
 “You’re making a mess, boy,” I growled, slipping back into character as I walked around to stand behind Darby’s wide-open legs. “Look at this slop.”
 
 I dragged a hand up over his gaping, twitching hole, gathering slick on my fingers like it was soap from a dispenser. I soaked my other hand as well, then spread slick over Darby’s bright-red, welted asscheeks.
 
 Darby gasped and cried out, especially when I slapped one cheek. I didn’t know what it was, but Darby had the finest, roundest ass of any omega I’d ever seen. I loved it. So much that I adjusted the bed up as far as it would go so I wouldn’t have to bend over far to drag my tongue across the slicky mess to taste it. I could worship and punish and mark that ass all day long and never get bored of it.
 
 “They were right to call you juicy,” I purred as I pushed two fingers into him, working them vigorously to give him enough of a taste of pleasure to drive him wild and to send slick gushing from his hole.
 
 When he was dripping like a faucet, I slammed my mouth into him, pulling his cheeks apart with my hands and using my tongue to slurp and plunge into him. He tasted so good that Iwished my tongue could grow as long as my cock so I could violate him all the way to his womb and drink him in.
 
 Instead, I hummed as I teased his rim and licked down to his balls and back.
 
 “Mmm, I should keep you open and horny like this all the time so I can snack on your omega pussy,” I purred before going back for more.
 
 Darby sobbed and howled in response, his body straining against the constricting bonds of the chair. He sounded hauntingly wretched, like I was whipping him instead of giving him pleasure, but he had also started to come like he was the alpha and needed to empty the seed from his body.
 
 “Did I say you could come, omega?” I demanded, straightening and plunging three fingers into his pink and messy hole.
 
 Darby cried out before gasping, “No, sir! Fuck me, sir! Please! Oh, God, please!”
 
 That was the Heat Lightning talking.
 
 I didn’t doubt that he wanted it, that he needed it. Heat meant that every cell of his body was focused on the single goal of opening his womb and getting enough alpha seed in there to conceive. Some omegas went mad if they weren’t fucked by an alpha during heat, the urge was so powerful.
 
 My instincts were still pinging all over the place, telling me that something else was going on, though. It drove me batty that I couldn’t put my finger on what it was.
 
 “Do you want my fat, alpha knot, boy?” I demanded, still working my fingers in him. My fingers would feel amazing to him, but also painful; good, but not good enough. “Do you want me to force your womb open and fill you with my babies?”
 
 “Yes, yes,” Darby wept, his body alternately going limp in surrender and tight with need.
 
 “Hmm. Maybe,” I said, like I didn’t want to be balls deep in him and to knot his ass hard. I pulled my hand out and said, “Maybe I should milk you first.”
 
 He wailed at the loss of contact between us, then gasped and shuddered when I grabbed his hard cock with my slick-messy hand and started pumping.
 
 Omegas could come almost indefinitely during a heat wave, though they ran out of fluid in their balls quickly. They didn’t produce sperm, just fluid, and even that was an evolutionary throw-back, like an appendix.
 
 Darby started coming immediately, moaning and twitching with pleasure that his restraints wouldn’t let him enjoy fully. I stroked myself with my other hand, letting the power of controlling what Darby’s body felt wash over me, and knowing the constant, increasingly dry orgasm would feel almost too good.
 
 Darby’s moans of pleasure quickly turned to groans of discomfort, but I kept going until those sounds bordered on screams of pain as his cock and balls continued to twitch. I kept at it until Darby was jerking and bucking in his bonds, his hole spasming and sending slick pouring to the floor. My balls distended to the point of pain as my body rushed to manufacture enough seed to impregnate him a dozen times over.
 
 When I couldn’t stand the now painful urge to mate, I cranked the bed down until Darby’s hole was at the level of my hips. Without waiting a second more than I needed to, I shoved into him, groaning with relief and rocking harder and harder until his hot, sweet body had enveloped my cock completely.
 
 I couldn’t even form words as I leaned forward slightly and grabbed points on Darby’s tightly restrained body for purchase so I could punch deeper and deeper into him. The ultra-sensitive tip of my cock pounded against the tight mouth of his womb like I could force my way in, which sent reverberations of intensepleasure all the way down my shaft, into my balls, and up my spine.
 
 “No! No!” Darby sobbed as the base of my cock started to tingle in anticipation of my knot swelling. “Hurt me! Punish me! I deserve it. I deserve pain, not this.”
 
 Those yellow flags waving in me turned bright red, but the awareness of Darby’s fragile state was swiftly overridden as my knot swelled as my orgasm started.
 
 God, it felt so good to knot an omega in heat! I thrust so hard as what felt like gallons of cum spilled out of my balls that the breeding bed shook and rattled with my force. Darby cried out wordlessly with pleasure as I groaned each blast that shot against the mouth of his womb and filled his insides to the point of distending his belly a bit. My knot barely let any fluid escape, so the pressure Darby must have been feeling would have only enhanced his pleasure.
 
 The orgasm was so strong that as it ended, I sagged over him, letting Darby’s body and the breeding bed take my weight for a moment as I caught my breath. I was so much bigger than Darby that my broad, sweaty, alpha body encompassed him completely. I’d given everything to that orgasm, but my hips still thrust and twitched a few times as we lay there, knotted and panting.
 
 It was amazing in every way and all the reasons I loved playing out fantasies through the Dark Fantasies Club. I’d been ferocious, letting my primal alpha loose to brutally mate my captive omega. You couldn’t beat the ecstasy of letting those primal parts of yourself out to play now and then.