[AUTHOR NOTE: Thanks to Jandro123 for giving me tip on Gumroad.]
"Mmn... ah..."
Kotonoha Katsura soaked in the steaming water, letting out low, unintelligible whimpers of comfort.
She had grown up as a sheltered young lady. While her family wasn't top-tier aristocracy, they were wealthy enough to employ servants for all domestic chores. Suddenly being forced to perform the menial labor of a servant—serving tea, cleaning, and washing a man's feet—had left her physically and mentally exhausted.
Earlier, while kneeling to wash Masao Busujima's feet, she had been a bundle of nerves and apprehension. Now, finally alone and relaxed in the warmth of the tub, the tension melted away.
The medicinal liquid in the water was already working to accelerate her blood circulation. But with the "extra ingredient" someone had added, the effects were becoming... pronounced.
"What kind of person is Master, really?"
Sinking lower into the bubbles, Kotonoha murmured to herself.
As Japan's number one swordsman, Masao Busujima had just demonstrated a miraculous technique—killing with invisible Sword Energy. To a martial arts enthusiast like Kotonoha, witnessing such a legend in action was overwhelming. Her admiration had peaked.
There is a cultural imprint in many Japanese women to admire strength. For a girl like Kotonoha, meeting a grandmaster like Busujima was akin to a fanatic meeting their favorite idol. She had almost no resistance to his authority.
If not for the terrible first impression he had made with his wandering fingers, Kotonoha felt she might have actually developed a crush on this master who was old enough to be her father.
"Seriously, what am I even thinking?!"
Snapping out of her wild fantasies, she quickly patted her cheeks with wet hands.
'I was actually fantasizing about doing... embarrassing things with Master? I must have gone crazy!'
She shook her head and stood up to leave the tub. But the moment she rose, a sudden weakness washed over her legs. The gentle breeze from the ventilation fan hit her wet skin, sending a jolt through her spine.
"Mmm..."
A strange, desperate sound escaped her lips.
After more than an hour in the medicated bath, the compounds had thoroughly penetrated her pores. Her skin sensitivity had increased to three times its normal level.
These weren't common street drugs. They were high-quality experimental compounds Adrian had obtained through Masao Busujima's connections. As a Sword Saint, Masao had deep ties with the directors of Takeda Pharmaceutical. Getting a few vials of "experimental supplements" was a trivial matter.
According to the classified instructions, this specific formula was a miraculous potion designed to alter a woman's constitution. It didn't affect sanity or force a mental break; instead, it drastically enhanced tactile sensitivity and libido. It was a product specifically designed for older men who needed their partners to be hyper-responsive.
Men's desires are often simple. They want to see a woman in ecstasy, begging for more beneath them. No man wants to sweat and labor for an hour only for the woman to ask, "Are you in yet?"
If that happened, any man's ego would shatter instantly.
This drug ensured that never happened.
Furthermore, the documentation claimed that long-term use would permanently alter the user's physiology, turning them into a creature perfectly tuned for pleasure. Exactly how it changed them was unclear, as the drug was still in the clinical trial phase.
'Either way,' Adrian thought, watching the screen, 'it's definitely good stuff.'
On the monitor, Kotonoha was squatting on the bathroom tiles, clutching her own breasts, her face a mask of confusion. Adrian smiled genuinely.
Because her sensitivity had tripled, when she tried to dry herself with the towel, the friction of the terrycloth against her nipples felt like sandpaper and electricity. It caused her to cry out involuntarily.
She was currently in a state of sensory overload, completely unaware of why her body was betraying her.
She remained squatting for over ten minutes, shivering slightly, waiting for the water droplets to air-dry naturally because she couldn't bear to touch her skin with the towel again.
Slowly, as the immediate rush faded and the drug settled into her system, her sensitivity began to return to a manageable level.
"Strange... why did it feel so weird just now?"
Kotonoha frowned, confused, as she carefully pulled on her pajamas.
"Ah—hmm—"
She tentatively reached up and cupped her breasts, kneading them gently.
A faint, pleasurable heat radiated from her chest. She let out a soft moan. However, after a few seconds, she regained her composure and snatched her hands away.
"It feels normal now. Was it just the heat?"
To be honest, for a moment, Kotonoha had terrified herself with the thought that she had been drugged.
One shouldn't underestimate the knowledge of a modern high school girl. In Japan, sex education starts early, and media is saturated with tropes. Even though Kotonoha and Saeko were virgins, their theoretical knowledge of "adult situations"—including aphrodisiacs—wasn't necessarily inferior to an internet addict's.
When her body acted up, her mind immediately jumped to the worst-case scenarios she had read about in manga.
'Aphrodisiacs... drugs...'
However, the current reaction of her body made her doubt herself. If it were really an aphrodisiac, shouldn't she be burning with uncontrollable lust right now? Shouldn't she be losing her mind?
Instead, she just felt... sensitive.
Thinking of this, the girl's face flushed crimson.
'What is wrong with me today?'
First, she suspected her Master of molesting her during a massage. Now, after a nice gift of a medicinal bath, she was accusing him of drugging her in her own mind?
Did she really view her Master—the legendary Sword Saint—as such a despicable villain?
"Kotonoha, you can't be so disrespectful! You cannot doubt your Master!"
She patted her cheeks forcefully to banish the "rude" thoughts, then walked to the bed and crawled under the covers.
In his office, seeing that Kotonoha had successfully gaslighted herself into submission, Adrian relaxed and closed the laptop.
Admittedly, given Kotonoha's timid personality, even if she had become suspicious, she likely wouldn't have done anything about it. But that wouldn't be any fun.
For a voluptuous, experienced woman like Manami, it was best to conquer her with sheer force and dominance.
But for exquisite, unblemished works of art like Kotonoha and Saeko? It was much more entertaining to corrupt them slowly, subtly influencing their minds and bodies until they fell into his hands willingly.
Kotonoha, exhausted from her day of labor and emotional turmoil, fell into a deep sleep filled with guilt toward Masao Busujima.
She was completely unaware of the trap that was slowly closing around her.
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