Hoshino Miru wasn't in a rush to use [Sensitivity] because class was about to start.
The first morning class was Japanese literature taught by their homeroom teacher Hiratsuka Shizuka, similar to language arts from Hoshino Miru's previous life, just with different text content.
"After you finish your final exams this week, it'll be spring break." Hiratsuka Shizuka organized her lecture notes at the podium. "Next month, you'll be second-year students."
Hearing about spring break, excited voices emerged from below, but fearing Hiratsuka Shizuka's iron fist, no one dared to make too much noise.
Yes, this homeroom teacher had the nickname "Invincible Iron Fist." Hoshino Miru had seen her discipline students more than once - the scene was quite intimidating.
"Even though there are only a few days left, you better listen properly to today's class. Don't let me catch anyone playing with their phones."
Hiratsuka Shizuka warned the students below. Toyogasaki was a quite liberal high school that didn't prohibit students from bringing phones to school, only from using them during class.
She knew there wasn't much content left to teach in the final days before exams - just reviewing key points.
Hoshino Miru listened for a while, occasionally paying attention to Yukinoshita Yukino, who didn't seem to be listening to the lesson.
Academic achievers like her usually had their own rhythm and wouldn't follow the teacher's pace step by step, as it would slow down their progress.
While others were racking their brains to cope with final exams, Yukinoshita Yukino had already started learning second-year, even third-year content in advance.
Hoshino Miru observed the girl. He had to admit this takamine-san was indeed very beautiful - exquisitely cute from every angle. Just one look would leave a lasting impression, no wonder she was narcissistic to that degree.
Suddenly, Yukinoshita Yukino frowned and turned to meet Hoshino Miru's gaze.
Hoshino Miru thought she would accuse him of peeping again, but instead saw the girl slightly puff out her chest and show him a composed smile.
In her view, she had won earlier and wasn't bothered by Hoshino Miru's staring. Instead, she felt she should maintain a victor's composure toward him.
This should count as provocation, right?
After thinking for a moment, Hoshino Miru decided to retaliate slightly.
First, he designated Yukinoshita Yukino as the target for [Sensitivity], then increased her body's sensitivity to twice normal.
The reason he didn't use the maximum level was that too drastic a change would make Yukinoshita Yukino react excessively.
The next moment, Hoshino Miru saw Yukinoshita Yukino's body suddenly tremble.
Due to her heightened physical sensitivity, the girl initially experienced the strange sensation of clothing rubbing against her skin. Actions that were normally unconscious now brought particularly odd sensations.
If this were some manga, Yukinoshita Yukino's perceptual abilities should have been enhanced, making her more aware of subtle changes in her body and surroundings.
As the breeze from the window brushed against the girl's body, her snow-white tender skin gradually took on a delicious pink hue, as if someone were lightly tickling different parts of her body with feathers. This strange stimulation was neither too light nor too heavy - just enough to make the girl react without being unbearable.
Yukinoshita Yukino unconsciously gripped her pen tighter. She noticed something was wrong with her body - her clothes were just touching her skin, yet they brought strange sensations.
With slight movement, the rubbing and friction between skin surfaces would subtly stimulate her nerves. This reaction made her body very stiff, pressing her legs together to try suppressing these strange feelings.
Just as Yukinoshita Yukino pressed her legs together, the moment the skin of her inner thighs touched, it felt like electricity flashed through her, almost making her unable to hold back a sound.
Yukinoshita Yukino desperately tried to suppress these strange feelings, but her body became even more sensitive. She could feel quite comfortable sensations coming from her inner thighs.
Many girls' first strange reaction during puberty might be when pressing their legs together, especially pressing a pillow between their thighs and unconsciously rubbing with their thighs a few times, creating a particularly comfortable feeling.
However, Yukinoshita Yukino had no such experience. With no experience, she quickly felt this special sensation like subtle electric currents, while her body began experiencing inexplicable restlessness.
Hoshino Miru glanced over. The girl was tightly pressing her legs together, a small section of fair, smooth thigh visible under her skirt hem, gently rubbing together. He could almost see the pink color emerging there, while her two legs wrapped in black over-knee socks trembled slightly.
At this point, Yukinoshita Yukino's face was completely red, though she hadn't yet noticed her own expression.
Obviously, she was beginning to notice an even more frightening reaction.
Compared to the strangeness in her inner thighs, Yukinoshita Yukino discovered subtle reactions deep in her lower abdomen.
But this reaction wasn't strange desire - it was simply being unable to hold it.
Yes, Hoshino Miru had long noticed Yukinoshita Yukino's fixed daily rhythm. She usually went to the restroom during the next break.
Class was almost over now - it was almost Yukinoshita Yukino's bathroom time. Hoshino Miru was somewhat curious.
Would his takamine-san continue enduring until class ended, or would she follow her instinctive desires and solve the problem before having an accident?
Hoshino Miru remembered girls' bodies were different - they couldn't endure as long as boys and might really have accidents.
Yukinoshita Yukino seemed to understand the seriousness of the problem, biting her lip and desperately suppressing her body's reactions.
But the more she desperately gritted her teeth, the more Hoshino Miru wanted to know how long she could endure, slowly continuing to increase her sensitivity.
"Mmm..."
The girl let out a tiny nasal sound. Apart from Hoshino Miru, who had been watching her reactions closely, no one noticed the situation.
The strangeness from her body and the stirring deep in her lower abdomen made Yukinoshita Yukino's breathing increasingly rapid. Her originally cold and proud face was now completely red, with occasional suppressed panting sounds audible.
Just as Hoshino Miru was thinking of continuing, the girl suddenly turned to look at him, her eyes filled with hatred as if looking at her greatest enemy.
Had she discovered something?
Hoshino Miru remained motionless, meeting her gaze with a look of concern.
"Hi-Hiratsuka-sensei, I'd like to use the restroom." Yukinoshita Yukino turned back, trying to suppress her unnatural voice. It was hard to imagine she could still maintain such composure.
No wonder her look was so fierce - she was planning to surrender.
Actively asking to use the restroom meant Yukinoshita Yukino was negating what she had said earlier. She also had instinctive desires she couldn't control - this was her body's most honest reaction.
Hoshino Miru's lips curved up slightly. He had known from the start that this takamine-san wasn't perfect at all. She also had things she couldn't do, but was usually too stubborn to admit it.
"Go ahead, be careful."
If it were someone else, Hiratsuka Shizuka would suspect they were trying to skip class, but Yukinoshita Yukino would never skip.
Therefore, Hiratsuka Shizuka readily granted Yukinoshita Yukino's request.
After getting permission, Yukinoshita Yukino began taking deep breaths. She slowly stood up, trying not to appear too strange, but her body was too sensitive - both legs were trembling.
Just standing up made Yukinoshita Yukino almost lose control of her body.
If she hadn't been biting her lip the whole time, she probably would have made a sound immediately.
However, Hoshino Miru knew the more frightening challenge wasn't standing up, but walking.
When the girl walked, skin friction was inevitable. Actions that normally wouldn't cause reactions were now deadly stimulation.
Hoshino Miru watched her pretend to be calm, slowly turning around and leaving her seat, each step particularly light and slow, particularly sluggish.
As she passed by him, Hoshino Miru caught the girl's fragrance and saw her tightly clenched fists and very tense body.
Just as the girl was about to leave the classroom, Hoshino Miru casually turned off [Sensitivity].
Because his experiment was over.
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