"Of course not!" Celes was somewhat flustered, wrapping her arms around Lucas's neck in a placating manner. "That's just a lingerie set, the whip is merely decorative. At most… it would only be used a few times on Carmena's big tits…"

"Is that so?" Lucas asked knowingly. "Then why wear the lingerie?"

"Doesn't the sex slave manual say that to better serve the Master, a sex slave must actively enhance her appeal, such as by wearing all kinds of seductive outfits?" Celes actually rolled her eyes slightly. "Has the Master already forgotten what he himself wrote?"

Faced with Celes's blatant "insolence," Lucas felt no anger.

He knew this meant the long-legged beauty had subconsciously accepted the master–slave relationship between them, gradually letting down her guard.

"Then why tag Sarah?" Though not angry, the training could not stop. Lucas continued pressing, "Are you wearing it for me to see, or for Sarah?"

"Of… of course…" The moment Sarah was mentioned, Celes grew flustered again. "Of course it's for the Master to see…"

"Really? You dare claim you didn't want to show it off to Sarah at all?" Lucas stared directly into Celes's eyes. "If you dare lie, you know there will be punishment!"

"But… but…" Celes stammered for a moment, finally unable to withstand Lucas's intense gaze. Her expression gradually turned pleading. "Sister Sarah is the little mare's girlfriend, and you are the little mare's Master. What's wrong with wearing it for both of you to see?"

"Of course there's nothing wrong, as long as you don't deceive your Master and obey honestly." Lucas gently kissed the long-legged beauty's smooth forehead, subtly reinforcing her conditioning before getting to the main point. "Since it's for the Master to see, go change into it now. Let me appreciate it."

Celes blushed and let out a soft "Mmm," then slipped out from under Lucas, picked up the shopping bag, and went into the bathroom.

Before long, Celes emerged wearing the exact outfit from the photo.

As a sporty girl who usually lived in basketball shoes, walking steadily in high heels required her to move extremely slowly.

The long-legged beauty did her best to maintain a haughty, aloof expression as she gradually made her way toward Lucas, who stood beside the bed.

At 182 cm tall, plus the ten–centimeter heels, Celes now towered over Lucas to the point where he had to look up to meet her eyes.

This situation gave Celes a faint sense of triumph, but Lucas would never allow such defiance. He immediately commanded, "Kneel!"

The long–legged beauty froze in surprise. She had thought that wearing such an outfit would at least give her a psychological edge over Lucas, even if she were to be fucked. She never expected he would shatter that illusion with a single word.

She pouted in displeasure, but her body obediently sank to its knees.

Lucas sat on the edge of the bed and ordered the kneeling Celes, "Bring the whip over with your mouth."

It took Celes a few seconds to process the command. Then, gripping the whip's handle between her teeth and supporting herself with her hands on the floor, she swayed unsteadily as she crawled to Lucas's feet.

He held out his palm. The long–legged beauty lowered her head slightly and placed the whip from her mouth into Lucas's hand.

The moment Lucas took the whip, he immediately brought it down once across Celes's back.

The leather miniskirt she wore left little to the imagination, the front exposed most of her breasts, while the back was completely bare.

The lash fell, and faint red marks instantly bloomed across the long–legged beauty's perfectly sculpted shoulder blades, looking utterly tantalizing.

Stung by the pain, Celes immediately dropped all pretense of defiance. Remembering she was supposed to "perform well," she reached for Lucas's crotch, intending to free his cock and service him with her mouth.

But before she could, Lucas landed another light strike on her back and said harshly, "Who said you could use your hands? Since when do mares have hands?"

Celes felt terribly wronged. She wanted to argue that she wasn't a real mare, so why couldn't she use her hands?

But the lingering pain on her back kept her from retorting. Tearfully, she replied, "This little mare understands her mistake. This little mare won't use her hooves."

With that, she leaned forward, took the waistband of Lucas's pants between her teeth, and began tugging them downward.

Fortunately, Lucas was only wearing simple casual pants without a belt, so Celes only needed to worry about pulling the waistband down with her mouth.

Lucas watched as the stunning girl used her soft, delicate mouth to tug down his outer pants, then his underwear. His already hard cock sprang free, slapping against her cheeks and nose several times, forcing Celes to shut her eyes and use her tongue to calm the throbbing length.

The long–legged beauty's tongue was just like her pussy, soft yet strong. The vigorous licking gave Lucas's cock the sweet illusion of being squeezed and massaged deep inside her.

As he enjoyed Celes's oral service, his gaze drifted toward her highly raised hips.

The black leather skirt she wore was extremely short, and she wore nothing underneath, so her full, rounded buttocks were now completely exposed to Lucas's view as the skirt rode up.

The asshole that had once been stretched wide by Lucas's cock had now returned to its original delicate, tight state. Its tender, pink appearance stirred his desire to dominate and defile it once more.

After a moment's thought, he purchased a new item from the System store: a brown "horse tail" over a foot long, with a silver pear–shaped anal plug attached to one end.

Celes had already taken Lucas's cock deep into her throat, her agile tongue and soft throat working diligently to pleasure every inch of him, when suddenly she felt something cold and foreign touch her rear, then push inward, stretching her asshole as it lodged firmly inside.

The sensation of something cold and swelling inside her was deeply uncomfortable. Carefully releasing Lucas's cock, she glanced back and was shocked to see a brown horse tail now protruding from her ass.

"Master," she whimpered, the discomfort in her ass making her involuntarily sway her hips, causing the tail to sway as if alive. "The little mare is so uncomfortable…"

"Endure it. You'll get used to it," Lucas dismissed casually. "If you're a little mare, how can you not have a tail?"

In his hand, he now held a gleaming metal dog leash, which he deftly clipped onto Celes's collar.

"Master!" the long–legged beauty immediately protested in a coquettish tone. "I'm a mare, not a bitch!"

"Have you forgotten the oath you swore during the master recognition ceremony?" Lucas slapped her lightly across the face. "Though each sex slave has her own role, in essence, you are all bitches, all flesh toilets. Do you understand?"

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