## Chapter 87 – Low. Secret # 3
The thought of leisurely washing my body had long vanished from my mind. After finishing my bath earlier than usual, Number 25 clutched my trembling chest and headed to the top floor where Low’s room was located.
“May I come in?”
Number 25 finished the short sentence and stood in front of the door, waiting for her answer.
Soon, her usual relaxed voice could be heard from beyond the door.
“Yes, come in.”
After opening the door and entering the room, Number 25 quickly closed the door and looked straight ahead, doubting my eyes.
“W-What are you doing?”
Due to my embarrassment, I inadvertently blurted out impolite words that I usually wouldn’t use.
The reason was that Low was welcoming Number 25 completely naked, without a single thread on.
It was the first time I had seen her naked body.
Maintaining sanity in this situation was not an easy task. Number 25 swallowed hard and stared blankly but surely, from bottom to top, at her body, which was more seductive than usual under the soft lighting.
It was hard to believe that she was someone who only stayed in the tower and did research without proper exercise.
Firm abs without a single bit of fat, fleshy thighs tightly pressed together, and a smooth vulva shyly blooming between them.
Large breasts that jiggled excessively with the slightest movement, nipples hanging like luscious fruits at the ends, and breast milk flowing endlessly.
I knew it was a cliché and common saying. But apart from that, there were no other words to describe Low’s body.
Her perfect figure, like a work of art, a sculpture made by God, exuded such an elegant aura that it couldn’t be fully captured in my eyes.
Before I knew it, the smell of medicine that always lingered in her room had long disappeared. Only a sweet scent filled with the pheromones of a naked female filled the room.
Unlike the embarrassed Number 25, Low maintained a very calm expression.
She took a step, approaching Number 25.
The closer she got, the stronger the scent became, numbing my sense of smell, and her seductive body became even more detailed.
Her fair skin was like smooth white jade without a single blemish, and each strand of her long eyelashes was mixed with a clear, heart-wrenching sorrow.
Everything was felt clearly and imprinted in my head. Number 25 inadvertently averted my eyes from her body at the unforgettable sight.
Because I felt like I would really lose myself if I looked any longer.
Almost touching Number 25, Low opened her mouth.
“How would you like me to do the research today?”
The voice coming from right in front of me was no different from usual, but it could sound so lewd depending on what she said.
Number 25, still looking away, asked her back with a seemingly nonchalant expression.
“What do you mean, how?”
“Didn’t I say back then…? That it would be more helpful for research to do it in a way you like.”
She had certainly said that. Low immediately put it into action after finishing her words.
“If you want, this place too…”
Low grabbed Number 25’s hand and moved it without hesitation to where her vulva was. Unlike her blunt expression, her pussy was already soaked, and the sensation of her touching my fingertips stimulated my terrible imagination.
It was obvious that I would end up having sex with her if things continued like this. This situation was not much different from the development of a cheap erotic novel sold on the street.
Number 25 didn’t want to cross that line. If I let just anyone touch my dick and let them have my body, wouldn’t I be no different from a prostitute?
As Number 25 hurriedly pulled my hand back, a transparent thread connected to her vulva sparkled.
Number 25 had no choice but to choose a desperate alternative.
“Mouth! Please do it with your mouth instead!”
“Okay, if that’s enough to satisfy you…”
Just as Number 25, who had barely caught my breath, was about to take a seat on her bed for foreplay, Low grabbed my shoulder and stopped me.
Number 25’s voice, speaking in a flustered tone, was trembling.
“Why are you doing this?”
“There’s no need to go all the way over there, is there?”
As if she couldn’t wait any longer, Low lowered her posture and began to lick Number 25’s dick, which hadn’t even dried yet, with her tongue.
The dick, which hadn’t even thought of getting hard due to the tension, reacted as soon as the moist and slippery tongue touched it.
“Ah…”
As the dick slowly began to grow, Low wrapped her tongue around it and carefully put it in her mouth.
Low, who had never even kissed anyone in my life, was sucking on my dick.
An untouchable being.
Looking down at her, whom I thought I would look up to for the rest of my life, kneeling and struggling to suck on a man’s dick, was accompanied by strange emotions, but apart from that feeling, her oral skills were not very good.
Her teeth touched slightly every time she moved her head clumsily, and Number 25’s expression gradually distorted each time.
Perhaps noticing that Number 25 was frowning for various reasons, not just because of her teeth, Low took her mouth off my dick and carefully asked.
“Sorry, did it hurt? It might be a bit clumsy because it’s my first time…”
Number 25, who had the most experience, had no choice but to take the lead in this situation.
I couldn’t undo what I had already started. If I had already done it, shouldn’t I at least feel good?
“Um… Please close your mouth a little and be careful not to touch your teeth. Do it with a feeling of sucking in slightly.”
“Okay… I’ll try it your way.”
Low nodded and answered, then put my dick back in her mouth. Every time she moved her head forward, my dick disappeared into her mouth.
At the same time, overflowing saliva dripped to the floor.
Her movements changed noticeably as soon as she heard a word of advice.
Her teeth never touched even once while she wrapped her tongue around my dick and shook her head back and forth, leaving only a pleasant sensation.
“Hoo, ha… Sucking, slurping… Churp, chup.”
The sound was also clearly different. Unlike the foreplay that only licked with her tongue, she was now making definite obscene water sounds.
Number 25 was flustered by her sudden change in movement, but I felt like I was losing strength in my waist, so I inadvertently grabbed her hair with both hands.
At the same time, Low took her mouth off my dick again and looked up slightly at Number 25.
The dick that came out of her mouth was covered in her sticky saliva.
Number 25 was silent for a moment, wondering if she was angry because I had grabbed her hair just now, but fortunately, Low smiled slightly as if that wasn’t the reason.
“This is an experiment to collect your semen… So you can move as you like.”
Move as I like, Number 25 was reminded of what she had done to me so far, and with the intention of taking revenge for that, I roughly grabbed the back of Low’s head and shoved my dick deep into her throat.
Low’s eyes widened as if she hadn’t expected Number 25 to show such violent behavior, but perhaps because she had already said it, she soon made her own efforts, such as tightening her throat to match Number 25’s movements.
My dick reached her uvula in an instant and blocked her throat.
As expected, the pleasure that I couldn’t compare to before began to rise up my dick as I moved myself.
Every time I moved my waist while holding the back of her head, a painful groan flowed from Low’s mouth.
“Hoo, eup, keup… Chup, tsk…”
As I stimulated her throat, saliva began to flow out of her mouth, which was incomparable to before.
Number 25 looked down at Low from time to time as I moved my waist. Low showed an expression and voice as if she was suffocating, but she never made a single complaint.
Rather, she was faithfully keeping her word that she wanted to make Number 25 feel good.
Her endless affection-filled caresses, Number 25 forgot the feelings I had for her for the past two years and was enjoying this situation.
‘Right, this is research. It’s not a sexy act at all… So it’s okay to do a little more, right?’
The movement gradually began to speed up.
Every time I pulled my waist back, Low’s throat stuck to me, and Number 25 was repeating a series of actions, stirring her mouth with my dick and then shoving it back into her throat in an instant.
“Eup, ha, chulup, suck…”
Although she was the one who started it, Number 25 was swallowed up by the pleasure I had brought upon myself.
My head was tilted back, and my toes were trembling.
By now, only unsightly moans were flowing from my mouth.
“Euh… I, I can’t anymore…”
Unlike the words that I couldn’t, the hand holding her head was constantly moving.
My body, already paralyzed by pleasure, did not listen to my commands.
Number 25 grabbed her head and pressed it tightly against my groin, then began to ejaculate deep into her mouth.
Semen flowing down her throat, Low could clearly feel the hot semen passing into her throat.
After the long ejaculation ended, semen that she couldn’t contain slightly flowed from under Low’s lips.
I thought she would spit it out as it was for research purposes, but Low swallowed it all with a gulp – a sound that clearly reached my ears, and then opened her mouth with a flushed face.
“Sorry… I said I would use it for research, but I ended up swallowing it. Can we do it one more time…?”
Low seemed to be waiting for Number 25’s answer.
There was no way I could stop here.
Number 25’s trembling waist was representing affirmation.
Low smiled slyly and put her face back on my dick.
She opened her mouth again and began to lick Number 25’s dick with her tongue.
Every time her moist saliva and hot, slippery tongue touched me, Number 25’s mouth flowed with moans like a female.
At this point, it was impossible to tell who was the beginner and who was the experienced one.
The dick that had finished ejaculating gave my body an even more sensitive sensation.
Number 25, whose body was twitching, looked down at Low with tearful eyes.
As if she was starting to enjoy Number 25’s reaction, Low tormented Number 25 with movements that were a little more obscene than before.
It could no longer be seen as part of the research.
She licked the tip of my glans with her tongue, then put it deep into her mouth, and then repeatedly tightened my entire dick and pulled it out to a precarious point.
“My mouth, ha… Does it feel good…? Chulup, it’s all for you… Tsk, if you don’t feel good even a little… Euh… Tell me right away…”
Every time she put my dick in her mouth and spoke, her tongue, which was wriggling here and there, tickled my dick.
Number 25, whose waist was trembling, seemed to want to take the lead somehow and opened my mouth with a completely unconvincing look.
“I, I’m okay. It feels good… You’ve become very skilled…”
It didn’t take long for that relaxed look to disappear.
The caresses that lasted for about five hours, the caresses that started in the morning and didn’t end until noon, Number 25 was the first to declare surrender.
“I, you can stop now…”
That’s enough, that didn’t mean let’s stop the caresses and move on to the real thing.
It really meant I wanted to stop.
Unlike the words that it was for research purposes, Low never took my dick out of her mouth even once for five hours. She didn’t collect the semen separately, and she swallowed all the semen that came out into her mouth.
Number 25’s dick wasn’t even getting hard properly anymore. Only watery semen like urine was passing into her mouth from my limp dick.
I pleaded with her in a voice melted with pleasure, but she didn’t seem to even think about listening.
If I had known that the leisurely research meant this continuation of pleasure, I wouldn’t have even started it in the first place.
A woman who belatedly opened her eyes to lust, Number 25 knew better than anyone how scary that was because I had already experienced it several times in District 7.
With the premonition that her ‘research’ would be long for the time being, Number 25 ejaculated into her mouth again with that uneasy thought.
