In the end, after much deliberation, she took out what she had hidden deep in her drawer. It was a small plug-shaped device that Lust had sent as a gift. 

Whether it could truly be called a gift was questionable. Though she didn’t fully trust his words, at this moment she had no other option than to physically block the flow.

After locking the door, the tense Serena sat back completely against the single sofa’s backrest and carefully rolled up her skirt. 

She lowered her underwear, carefully removed one foot, and placed her leg on the armrest. The cool air felt between her widely spread legs made her vaginal opening pulse involuntarily.

Serena handled the soft device in her hands to warm it slightly, took a deep breath, and brought its tip to the entrance of the hole where fluid was flowing abundantly.

“It, it should be around here…”

She fumbled with her fingers around the vaginal opening that she only vaguely knew about, having never directly seen it or inserted anything into it before. 

She inserted her finger into the tightly closed flesh gap to spread it and confirmed the existence of the pulsating hole. The mucous membrane, slightly pooled with fluid, tightened around the hole when the tip of her finger poked it.

“Slowly, hnngh, if I push it in, it’ll be, be fine, mmmm.”

With trembling hands, she placed the blunt tip of the device against the hole and pushed it in. 

Had she known better, she would have loosened the hole slightly first and coated the device with plenty of fluid to make insertion easier, but being new to everything, Serena only thought about inserting the plug as quickly as possible while enduring the embarrassment. 

Eventually, she pushed the device in clumsily with impatient, unskilled force.

“Ack, ugh.”

Fortunately, the thoroughly wet mucous membrane swallowed the device easily after a slight tight pressure. The plug, much smaller than a typical genital, fit precariously perfectly into the hole that kept opening and closing like a mouth. 

Serena pushed it in until the wide plate at the end of the plug pressed firmly against the entrance of the hole, then removed her hand with a sigh of relief.

She had been so tense that in just a moment, sweat had seeped through enough to make the fabric stick to her skin. Serena put her underwear back on and carefully stood up.

“This feeling, ah…”

She definitely felt the twitching hole tightly blocked by something. It wasn’t exactly a comfortable sensation, but it was much better than the constant feeling of hot liquid gushing out. 

However, worried that the hole might loosen and the plug might fall out, she had to keep her lower body tightly clenched. Her gait naturally became more awkward and cautious than usual, but she left the room trying to act normal.

“Are you really going alone, Miss? Wouldn’t it be more comfortable if I accompanied you?”

The secretary and Daisy, who had followed her to the carriage, repeatedly expressed their concerns. But Serena firmly ordered them not to follow and opened the carriage door alone.

“The commercial district has good security, and I can protect myself, so don’t worry. I’ll be going by carriage and returning by carriage, so what problem could there be?”

Once she boarded the carriage alone, having separated from the two with the excuse of needing to think, she let out a sigh. 

She didn’t want anyone to know about her buying underwear, and above all, she didn’t want to reveal to anyone what information she was seeking at Yulinus’s store. She couldn’t let them know about her suspicious activities.

The coachman began driving the carriage with a gentle touch. Sitting on the long seat with soft cushions to prevent buttock pain, Serena adjusted her posture several times. No matter how small the plug was, sitting with something blocking her hole made no position comfortable.

“Still, it’s just a slight feeling of volume at this level.”

Thinking she would have to endure some discomfort, Serena waited for the carriage to reach the commercial district. But this thought shattered just a few minutes later.

“Wait. Something feels strange.”

When the carriage entered a somewhat rough road and jolted, Serena bounced significantly in her seat. At that moment, the tip of the plug inside poked her inner wall.

“Ah!”

Hastily covering her mouth after the scream escaped, Serena was at a loss in an awkward position, unable to sit or stand properly. The problem wasn’t simply that the plug had gone deeper due to a big impact.

The size of the plug inside her hole had changed since she first left home. At first, she thought it was just her imagination, but now the plug, which had swollen thicker and longer, was noticeably different, pressing against the inner mucous membrane and invading deeper.

“Hng, mmph, ungh.”

To prevent strange sounds from escaping, she firmly covered her mouth with her hand, and Serena fidgeted her legs at the increasing volume inside her. 

She didn’t have the courage to remove what she had inserted, which would require taking off her underwear and inserting her fingers into the hole while in a carriage traveling outdoors. 

The mere thought of the coachman discovering her in such a state was dizzying.

But sitting still wasn’t an option either, because the rough road kept making her body bounce on the cushion, thrusting up and down. Trying to hold onto the handle for support was useless.

“Ungh, hoo, ugh, haah.”

The plug absorbed all the fluid flowing abundantly from inside and grew enormously in size. Now as large as a typical male organ, the plug used the irregular vibrations of the carriage as power and randomly poked her inner walls.

The sound of the carriage wheels noisily racing on the road gradually faded away. The strength in her hand covering her mouth, fearing the coachman might hear, slowly drained away. 

Her eyes, initially filled with shock, gradually became hazy, like being covered in fog, from the tingling pleasure spread by the intruder moving inside her.

Clear and distinct pleasure, much more vivid than what she had felt from simply rubbing her private parts against chairs or cushions before, repeatedly pounded her head. 

The plug, hardened by absorbing her fluids, butted its round head against all sides of her inner walls like an er*ect organ.

“Ah, ugh, haahngh!”

Grasping the ceiling handle like a lifeline, Serena instinctively moved her lower body in rhythm with the jolting carriage. Her yearning intensified as it tantalizingly never quite reached her deepest point.

She couldn’t even think about hiding her bursting exclamations, nor did she notice her clothes getting wrinkled. Like the woman she had once seen mounted on a saddle in a suspicious shop, 

Serena too pursued an elusive climax by thrusting her lower body on the soft sofa.

“Ah, aah, a bit, mooore, ungh, more, haah.”

Her body, gradually soaking in pleasure, knew that something greater awaited at the end of this precarious sensation, something she had never felt before. 

The climaxes she had experienced until now seemed like mere jokes, as sharp pleasure that intermittently grew intense then subsided savagely ached in her lower abdomen.

The size of the plug, which had seemed too large and burdensome just moments ago, now left her wanting more. 

Though the device filling her insides was still thick enough to be overwhelming, her inner walls, constantly squirming and kneading the device, kept hungrily chewing on the plug.

Her body, holding the ceiling handle, fluttered about following the carriage’s movements. Her head, weakly tilted back, repeatedly bumped against her arm before drooping down. Her panting hot breath and moans mixed, warming the air inside the carriage.

Her body landed heavily on the seat with quite rough thuds. Her dreamy, relaxed eyes stared at the meaningless ceiling of the carriage beyond her hazy vision.

“Hnngh, ungh, haah, aah!”

At the moment when the carriage jolted particularly hard, perhaps hitting a large stone, the greatly swollen, hard tip of the plug firmly pressed against some point deep inside her body.

Her blurry vision turned black, and her consciousness momentarily drifted far away.

“Haah, ungh, ah.”

Her suppressed breath barely escaped, scraping her throat. The fluid gushing from inside was again completely absorbed into the plug, and the device grew in size accordingly.

Before she could enjoy the climax that had overtaken her entire body, Serena hunched over, clutching her lower abdomen from the size that now painfully filled her inner walls. Her feet, which had been scraping the floor with toes pointed, were still trembling.