Using a Mysterious Spellbook Ended Up Creating a Slave Harem - Chapter 12

 Erika Wakisaka - Part 3

"And with that, the second stage is complete. Next, I just need to make the crest memorize that I am her master, and it will be finished."

Having ejaculated twice in such a short window, my cock was understandably in a semi-flaccid state. Deciding to enjoy her mesmerizing chest until it revived, I set upon the breasts that were heaving up and down with her ragged breathing.

"Mmmph?! Ih... ♪ Nngh... ♪"

Cupping her twin mounds from underneath to push the nipples outward, I reapplied the aphrodisiac magic. Smirking at the incredibly smooth, pleasant-to-the-touch skin, I brought my face close to the tips of her breasts, engulfing one of her hardened, perfectly round nipples in my mouth like a baby and sucking on it.

"Ngh... chuh... chuh... Ah... it tastes amazing." 

"Mmph... ♪ Ngh... mmmph... ♪" 

"Your breasts are so huge and soft... they're the absolute best... ham... chuh..."

Utterly captivated by a pair of massive breasts I could never experience with Iroha, I kneaded them wildly while sucking and licking her nipples raw. Alternating between the twin hills that seemed built to entice men, I covered them in my saliva, feeling the power surge back into my crotch as I did so.

"Ngh... chuh... Alright, it's finally time."

Pulling my mouth away from her breasts, I straightened my posture and set my sights on her pussy, which was overflowing with my initial semen and a massive deluge of love juices. Grasping my penis—which was once again pointing toward the ceiling—I drove it home from the opening all the way to her deepest depths in one smooth stroke.

"Ngh... Mph?! Nngh-nngh... ♪" 

"Whoa... the suction is incredible..."

Perhaps due to the shock of me plunging all the way inside in a single breath, Erika’s entire body gave a violent shudder before freezing solid. Her vaginal walls clamped and clung tight against my shaft, responding with a milk-milking motion that seemed intent on squeezing out my semen.

"Ahhh... this is amazing... Erika's inside feels so good..." 

"Hih! ♪ ...Ngh... ♪ ...Ngh... ♪ ...Ngh... ♪"

With her sexual sensitivity driven mad by the crest and the aphrodisiac magic, she let out sweet, nasal groans in response to my movements. Knowing that Erika was also feeling intense pleasure made me feel incredibly elated.

"Let's feel amazing together, okay?" 

"...Ngh... ♪ ...Ngh... ♪ ...Ngh... ♪"

Using my rock-hard erection, I plunged back and forth repeatedly through her vagina, which had turned into a slippery, muddy swamp from the massive amounts of fluid. The sensation of her mucous membranes squirming and wrapping around my shaft could only be described as absolute heaven.

Wedged between Erika's fleshy thighs, I furiously pumped my hips, completely lost in the act. Captivated by her massive breasts bouncing with every movement, I ground myself against her vaginal walls, intensifying the pleasure even further.

"Ah, it's... it's wrapping around me so tight..." 

"...Ngh... ♪ ...Ngh... ♪ ...Ngh... ♪" 

"Ahhh! Th—This is insane." 

"...Ngh... ♪ ...Mph?! Ngh! Ngh! ♪"

Her vagina offered a entirely different texture than Iroha's, but it was a masterfully constructed organ that didn't lose out in the slightest, causing my hip movements to accelerate wildly. Planting my hands flat beside Erika's shoulders, I watched her face flush red and distort with pleasure as I launched into my final sprint.

"Ah... it's almost time... okay?" 

"Ngh! ♪ Mmmph! Ngh! ♪" 

"It's coming! I-I'm about to blow! It's coming!!" 

"Ngh! Ngh! ♪ Ngh! ♪" 

"With this... Erika... you belong to me forever!!" 

"Ngh! Mmph!! ♪ Nngh!!! ❤️ Mmmph!!! ❤️"

Pulling her soft, voluptuous, feminine body tight against mine, I pulled her close and dumped my semen into her deepest depths. Her vaginal walls clung flat against my cock without leaving a single gap, squeezing it fiercely as she, too, soared into a paradise of pure pleasure.

Even after completing my third ejaculation, I remained frozen for a while, holding Erika tight to soak in the afterglow of the ecstasy. Once she finally drifted back from her orgasm, I reluctantly lifted my heavy torso, missing the sensation of her breasts being flattened beneath my weight.

"Haa... haa... It's a success."

Checking her lower abdomen, the pink color of the crest had deepened, casting a faint, rhythmic glow. Considering how it went with Iroha, this meant Erika had officially become a completely submissive crest slave to me.

First, to verify, I reached down and removed the ball gag from her mouth. Finally freed from her gag, she took one deep breath before looking up into my face.

"............Master." 

"Yeah... I am your Master, Erika." 

"...Yes. My... my Master ♪"

Seeing my second crest slave successfully born, a smug smirk naturally broke across my face. On top of that, she was a core member of the most popular idol group in the country right now.

Amused by the thought that I would eventually have her offer up the other idols in her group as well, I set about releasing her bonds for now so I could thoroughly enjoy Erika's erotic body. Freed from the restraints, she slowly and heavily pushed herself up.

"Erika. First, take off your clothes and stand completely naked." 

"Understood."

Watching her step off the bed and strip out of the corner of my eye, I cleared the clutter of restraints off the mattress. By the time I finished setting them aside, Erika had shed everything, transitioning from half-naked to fully nude.

My gaze instinctively locked onto her mesmerizing, heavy breasts. Staring at the areas that were always hidden beneath bikini tops in her gravure magazines, I felt the strength surge right back into my cock once again.

I spent a moment pondering what position to try next, before deciding on that one. If you enslave a woman with large breasts, there was one specific position you absolutely had to try.

"Alright, I'm going to lie down on my back, so get on top and insert it yourself." 

"Yes."

Lying flat on my back on the mattress, I left the rest to her. Having felt a bit of fatigue in my waist from everything we'd done so far, I was going to have Erika serve me using the cowgirl position.

"Well then, please excuse me." 

"Yeah, go ahead."

Showcasing her dripping wet pussy and the faintly glowing crest on her pubic area, she straddled my torso and lowered her hips. Gently taking my hardened penis into her hand, she aligned my glans with her opening and guided it all the way into her depths.

"Nngh... Ahh! M—Master's... it's so big ♪"

After bottoming out initially, she began slowly shifting her weight up and down in shallow strokes. Before long, she began rolling her hips as if searching for something, quickly discovering the exact spot that made her feel good.

"Ngh! Ah... ♪ I—If I grind... right here... ♪" 

"Ohhh... that's perfect..."

Interlocking my fingers with Erika's in a lover's handhold, I stared intently at her as she immersed herself in her cowgirl service. Watching her bouncy hair and massive breasts leap wildly as she rhythmically slammed her full body down against mine was the absolute pinnacle of visual ecstasy.

"Ahn! It feels so good ♪ M—Master's is so hot... ♪" 

"Ah! Erika! Move more! More!"

Allowing the woman to handle everything while you lie back and receive her service was the absolute best. Watching a pair of massive breasts that were unthinkable on Iroha sway and bounce violently, I savored the tingling, intense pleasure vibrating through my crotch.

"Ahhh! Master ♪ Master ♪"

Her vaginal walls clamped down on my shaft with immense force, yet the lubrication from her love juices kept it sliding smoothly inside her. Desperately holding back my ejaculation from the sheer intensity of the pleasure, her movements grew even more frantic, as if she were also being pushed to the brink.

"Auh! It—It feels so good! ♪" 

"Ngh... I—I'm... about to..." 

"Hih! N-No! M—Me too!" 

"E-Erika! Let's cum together!" 

"Ngh ♪ I—I'm gonna cum! I'm cumming! ♪" 

"I-I'm about to blow! It's coming!" 

"I-I'm cumming! ♪ I—I'm going! ♪ Ahhh!!" 

"It's coming! Nngh!! ...Ah! Ahhh..." 

"Iiiii! ♪ Ahhh!! ❤️ Ahhh!!! ❤️"

Erika swallowed my cock all the way to the base as if trying to push her uterus up, grinding her hips in tight circles while keeping her cervix mashed firmly against my glans. Utterly defeated by the movement, I sprayed my semen into her, and she arched her back into a crescent moon as she reached a shattering climax.

Down on Erika's lower abdomen, the freshly carved crest began to glow intensely pink, powered by the semen swallowed up by her womb. Once that mysterious and beautiful radiance faded, a deep pink crest remained on her skin, pulsing with a faint, subtle light.

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