It Reaches Her Navel
When I laid it on her stomach, it reached all the way to her navel.
"Erina. Your nipples are completely hard."
Honestly, I had felt them from the moment we started kissing.
While our bodies were pressed together, the stiff peaks of her nipples kept poking through her uniform into my chest, and the erotic sensation had been almost impossible to endure.
"Th-that's mean… Using a physiological reaction like this to pressure me…!"
"…And a man's erection is somehow different?"
"Mean…"
Besides…
"Even if that weren't the case. Look at what's running down between your thighs."
"Ah…!"
At some point, clear, transparent love juices had begun trickling down Erina's thighs from between her legs…
It wasn't gushing out in streams or anything; just a little had leaked, but still.
"Ah, th-this is……! Y-you're a pervert, Professor!!"
Her face had already been flushed from the kiss, but now the color deepened even further as she scolded me.
"That's exactly why you shouldn't get embarrassed over something like this already…"
"…Hah. B-but I can't help being embarrassed…"
It wasn't as if I didn't understand her reaction.
Still, for all that magazine had gone on about this issue and that issue, it apparently hadn't spelled things out quite so explicitly after all.
"Anyway, we should keep going."
With that, I lightly pinched and twisted one of the nipples that had been poking stiffly through her clothes.
The relatively calm expression Erina had managed to hold until then crumpled in an instant, and a soft moan slipped from her lips.
"Ah, nngh… P-Professooor…"
Once things reached this point, I couldn't hold back any longer either.
Even just taking off her clothes, she was so painfully slow about it.
Especially once we got to the skirt she had left for last—
"Erina. How long are you planning to keep holding out like that?"
At least I had managed to get her top completely off, so her bare upper body was exposed, and her breasts swayed gently with every little movement she made. That much was helping me keep a grip on my reason.
"P-Professor… aren't you embarrassed?"
I had actually been trying to undress in time with her, one piece at a time.
But when she suddenly stopped midway and refused to continue, I ended up freezing as well.
So right now I was only half-naked myself, and watching her get shy over just that was a little deflating.
"…I've already shown you everything, haven't I?"
"Th-that is true, but…"
"…Fine. If taking it off is that hard, just stay like that."
"P-Professor?"
"But come over here, will you?"
"W-why…?"
Why else.
"We'll just do it with your clothes still on."
"I-I'll take them off!!"
…Why did she look so disgusted by that?
Whatever the reason, it let me strip her lower half off in one go.
Not long after, I had completely naked Erina sitting in front of me.
I moved in close behind her and pulled her into my arms.
"Kya, kyaaah, P-Professor?!"
"Don't react to every single little thing, Erina…"
"B-buuut…"
First priority was getting her pussy nice and wet.
I had clearly seen her juices seeping out past her panties earlier…
But that didn't necessarily mean she was soaked all the way inside…
Since this would be the first time for both of us, we needed to be careful.
Looking down past her back while I held her lightly, Erina's pussy was incredibly clean.
Of course it was—she was a virgin…
Staring at that soft, peach-pale slit sealed tightly shut in a perfect straight line, I felt… something.
Awe.
I never expected the first woman's pussy I ever saw to move me this much.
Ah. Was that too shameless of me?
Anyway, I couldn't just keep sitting there hugging her forever, so I reached out.
My left hand stretched toward her pussy.
"Eut…!"
Even though my fingers had only just made contact, her exaggerated reaction almost made my own heart jump.
But maybe that was only natural, the first time a man's hand ever touched her sex.
In any case… her pussy was clenched so tightly shut that even getting a finger inside was going to be a challenge.
So I pressed my middle and ring fingers together and forced them into that sealed vertical line, prying the entrance open.
What I felt next through my fingers…
No—the way her pussy seemed ready to suck my fingers right in, the soft yet springy texture seized every nerve ending in them at once.
"Nngh… nngh-eut… Professooor…"
"Forgive me, Erina. They say it's important to get you wet before insertion…"
…I had to make sure she was properly soaked all the way inside her vagina.
So, combining it with a bit of foreplay, I used my free right hand to seize her right breast, kneading and groping it roughly as if I meant to mold it.
"Eut… fuuuh…"
"Just as I thought… Look. Compared to the entrance, the inside is still pretty dry."
It was incredibly hot.
No—warm, maybe?
This was the first time I had ever learned that the inside of a human body could be this warm, that it could share its heat with me.
Schlick.
Khh… Listen to how tight her pussy is around my fingers.
"Nngh, nngh-eut…!"
When I put a little more force into my fingers and pushed deeper, a slightly rougher moan spilled from Erina's mouth.
"Sorry if that hurt…"
"N-no… I-it's just… th-there's this strange feeling… inside me… nngh…!"
She seemed both unfamiliar with and a little frightened by the foreign object of my fingers slowly invading her body.
"I know it's your hand, Professor, but s-something about it still scares me…! Fuuuh-nngh…!"
Schlick, schlick, schlick.
My right hand never stopped either.
"Professor, my nipples aren't… toys…!"
Using the tip of the finger I had pressed against her nipple, I vibrated it up and down at extreme speed, over and over.
With nothing but my index finger I could deliver both intense friction and stimulation to a woman's nipple at the same time.
"Eut… nngh… nngh-euuh……!!"
With erogenous zones being attacked simultaneously from both below and on her chest…
It took almost no time at all for her insides to grow wet.
Oh.
It felt a good bit wetter than before.
Whether this was enough or not, though, I honestly couldn't tell…
I hoped it would be fine.
Still, continuing to torment only her pussy like this felt wrong, so it seemed better to wrap things up soon.
But then—
"P-Professor, P-Profess… Professooor……!"
I had just decided to stop, yet Erina suddenly went into a massive spasm before I could pull away.
Did she just come?
At the same time, the two fingers I still had buried in her pussy were suddenly drenched in a hot, wet gush so intense it almost felt like she had wet herself…
The vaginal muscles around my fingers clenched in a fascinating pattern, tightening again and again.
"Haa, haa, h-haa……."
In time with Erina's breathing they squeezed and released, squeezed and released, and every so often they clamped down hard—
If I had felt that around my cock, I probably wouldn't have been able to hold back either.
"You came."
"H-haa, haa, haa… haa…… I… did?"
"That just now was you reaching climax."
"Ah……. P-Professor… I-I'm so tired right now…"
I could see her legs trembling. Or more precisely, her thighs?
"All right. Lie down and rest. I'll take care of the rest."
It wasn't a violent shaking, but the fine tremors were visible even to the eye, so I felt sorry for her and told her to lie down.
"Huh? Professor…? I-I'm… a little exhausted right now…"
"That's why I said you don't have to do anything, Erina."
Press, press.
I curled the fingers still inside her vagina and scraped firmly against her walls, and another reaction came immediately.
"Nngh-hit…!"
Slick.
Pop!
Having seen enough of a response, I pulled my fingers free and laid Erina comfortably back against the pillows.
"There. Just lie down and rest easy, Erina. Though falling asleep would be a problem."
"I-I won't fall asleep…!"
"Good enough, then. Ah. Will you put this on?"
"What… is this?"
What I handed Erina was a rather crude-looking ring.
She took it with a face still flushed deep red from exhaustion and looked up at me questioningly.
"It's a contraceptive device."
"…A contraceptive?"
She had been rolling the ring around on her palm, but at my explanation she stopped and focused on my words.
"Yeah. You wear it on your finger. It's enchanted with magic that prevents pregnancy."
Condoms existed here too, of course…
But this was a world where magic worked, unlike the reality I came from—
so there were all sorts of contraceptive methods available.
Everyone had their preferences, and sometimes different methods were needed depending on the situation, so I didn't think it was a bad system.
"Aha…"
"The catch is that this particular item only works when both the man and the woman are wearing one."
I had no idea about the mechanism that required both partners to wear them for the contraception to take effect, but it was certainly a curious object.
The effect only lasted a week, so it was something you threw away afterward, but still.
"I see…"
After listening to my explanation, Erina quietly slipped the ring onto the ring finger of her left hand. Watching her do so, I decided the time had finally come.
All right, then…
"Mm."
Both to aim my cock at her entrance and to satisfy a little of my own curiosity, I lifted Erina's two pure-white bare legs and rested them on my thighs.
Once I did that, my cock ended up positioned right in front of—or rather, right above—her pussy.
In a way, it was the perfect pose for measuring length…
Looking at it like this.
My cock reached all the way to the spot where Erina's navel was.
"W-wait…! Waitwaitwait, Professor…!?"