Chapter 288: Semen Collection

Even after talking about homework, we stayed close together and chatted about this and that, before showering one last time before sleep, we drifted off in the same bed.

And so, the next morning arrived.

As soon as I sat up in bed, the first thing I saw was Hwayoung Sunbae’s figure, looking like she had already finished her morning routine.

“You’re awake?”

“You’re up early.”

“If my condition is good, I usually wake up around six in the morning. The morning sunlight and air are the best for replenishing magic power. Back when I ran out of tar cigarettes, my condition was pretty bad, and I’d just collapse every day.”

“So, that’s why Cha Yuri, who consistently wakes up early every morning, also has a lot of magic power?”

“As someone joining late, if I want to catch up to those two, I should try adopting a lifestyle of waking up a bit earlier. It seems necessary.”

“You’re… already dressed.”

“What, you’re disappointed?”

“A little.”

Even though there wasn’t time for one more round of sex before leaving, I at least wanted to see Sunbae’s chest one last time. I had wanted to.

“It seems the bug that doesn’t wake up early doesn’t get caught. I really need to wake up early next time.”

“Do you have any plans today, Sunbae?”

“Me? I have to go home and make potions. To meet the deadline for submission, I’ll have to work diligently for a while again. I barely managed to get away yesterday.”

“Why didn’t you just do it in advance?”

“It’s because I got all worked up over your semen research. That’s why this happened. Why didn’t you tell me earlier that you could control the sperm concentration….”

Muttering like that, Hwayoung Sunbae rubbed her lower abdomen slightly and mumbled with a slightly suspicious voice.

“…When you came inside me yesterday, you didn’t happen to use the ‘stuff inside’, did you…?”

“I’m capable of that much judgment. Would I really ejaculate irresponsibly without asking for Sunbae’s consent? I wouldn’t do that.”

“…Up until now, you haven’t even explained properly, and you’ve just been coming inside me the whole time.”

“Of course, even then, I ejaculated with it set to 0%. And besides, with Sunbae’s birth control pills, there’s no need to worry about pregnancy in the first place, right?”

“That’s true.”

“Someday, if Sunbae wants my child, I’ll hesitate no longer and raise the sperm concentration to the maximum and cum inside her. But for now, neither Sunbae nor I had any particular plans for a second generation, so it was right to hold back for the time being.”

“…Besides, having a child with anyone is such a significant matter that I’d have to discuss it with the other women too. It would be.”

“Anyway, since you mentioned it, I won’t bother taking birth control pills separately anymore. So you too, be careful not to suddenly cum inside me with the ‘stuff inside’.”

“I was already being careful.”

“…And, sit there for a moment before you get dressed.”

“Huh?”

“Just do it quickly.”

Wondering what she was getting at, I obediently sat perched on the edge of the bed as she instructed. Hwayoung Sunbae knelt down and quietly pushed her face between my legs.

“This time, cum with the ‘stuff inside’. I’m going to research it properly again.”

Now that I think about it, she had asked for semen containing sperm for research.

“As promised, Hwayoung Sunbae was diligently preparing to extract it via fellatio, and I felt quite proud of her in many ways.”

“If it’s the ‘stuff inside’, what concentration are you referring to?”

“……What?”

“I mean the sperm concentration. You said you could control it.”

“…You can control that?”

“It works.”

“Up to what percentage can you control it?”

“Well, the function states it can go up to 50%.”

“Holy shit. Are you even human?”

As soon as she heard my words, Sunbae reacted with shock and curses, and then began explaining the ratio of sperm in male ejaculate. She continued her explanation.

“Hubae, do you know what percentage of a typical male’s ejaculate is actually sperm?”

“Hmm. I’m not sure, but maybe around 10 to 20%?”

“It’s around 1%.”

“……What?”

“Generally, the proportion of sperm in ejaculate is around 1%. Did you get that?”

“…Huh. That’s quite different from what I expected.”

Only after hearing her serious explanation did I realize again what a ridiculous item this ‘sperm concentration control function’ was. I could.

“Wait, then how does the gauge for the ‘sperm concentration control function’ I’m using change?”

“To explain about this function, the gauge level for the sperm concentration control function does not move in direct proportion to the percentage. Starting from the lowest value, 0%, it goes to 1, 2, 3, 4, 5%. And then it can be changed in eleven stages: 10, 20, 30, 40, 50%.”

‘Why are you telling me that crucial detail now?’

“When Master first used this function, I had not yet been ‘purchased’ by Master.”

‘…Right.’

“Certainly, this was also my fault for not properly checking beforehand and just pulling the gauge to the left. It was my problem too.”

“I, who naturally assumed the numbers would change proportionally, had thought the third notch was 10%.”

“It was only now, hearing Sunbae, that I learned the third notch, where the gauge was initially, actually meant 2%.”

“Do you get it now? What that 50% you mentioned means.”

“…Yes, I certainly do. And why Sunbae reacted that way.”

“First of all, never tell anyone else about that function. If any other researcher heard about it, not me, you’d definitely become a test subject for human experiments.”

“…Understood.”

“Even without that, I was already fully aware that my very existence was a subject for experimentation and research. I was.”

“A male Awakener. Colorless inner energy. And this thing I just found out today.”

“In many ways, it was a moment that reminded me again that I am an alien existence in this world.”

“Perhaps it’s because I’m someone reincarnated with memories from another world. That might be the reason.”

“Since it was still something I couldn’t understand, there was no point in harboring doubts.”

“Anyway, let’s think about that later. Right now, Sunbae needs my semen for research, doesn’t she?”

“…That’s true.”

“If you’re going to use it for research, wouldn’t the 50% concentration be much more useful?”

“…No, forget that. That concentration is clearly beyond human limits. It might even cause repercussions for your body.”

“Repercussions?”

“Imagine if you had to ejaculate 50 times in a row right here. Could you handle it?”

“…It would be fortunate if it just ended with a trip to the emergency room.”

It wasn’t just a figure of speech; it wouldn’t be strange if I literally turned into a mummy. Hearing such a realistic analogy made things feel grim for no reason.

“Of course, I don’t know if it would actually put that much strain on you, but it’s better to increase it gradually and check if there are any risks. It’s good to check.”

“…Well, there’s no harm in listening to Sunbae for now. After all, when it comes to worldly wisdom, Sunbae has lived longer, so you must know much better, right?”

“Good thinking.”

Having dismissed the idea of 50% semen, Hwayoung Sunbae pondered for a moment, then carefully held up three fingers.

“For now, let’s go with this much.”

“30%?”

“It’s 3%. Whether it’s 30% or 50%, it’s far beyond the human range. Were you even listening to me?”

“I was just kidding. But according to what Sunbae said, isn’t 3% also beyond the human range?”

“…I just judged that this much would be okay. Assuming that each 1% increase in sperm concentration adds the strain of one ejaculation, 3% would be three times, so I thought you could handle it.”

“Is that based on the time I ejaculated five times at Sunbae’s place last time?”

“Yeah. If even this feels like too much, then 1% or 2% is fine too.”

“No, let’s go with 3%.”

“3%… I guess there won’t be any particular problems.”

Considering my base level was 2%, 3% would only be about 1.5 times the burden, not triple. Besides, I had experience ejaculating up to four times in a row even before I got this sperm concentration control function.

“『0%-●—50%』”

Holding an empty potion bottle, for Sunbae who approached me, I pulled the gauge three steps forward to 3%.

“…Hey, Hubae.”

“Yes?”

“Could you maybe tell me right before you’re about to cum? Just as you’re about to finish? Couldn’t you tell me in advance? Right before you finish, I’ll hold this in front of Hubae’s thing, and if you cum into it….”

“Sunbae, I clearly stated that I would only give it via fellatio. And in my opinion, fellatio must conclude with ejaculation inside the mouth.”

“…That’s cheap, really.”

“If I didn’t do this, you were planning to extract like a whole liter, weren’t you.”

Realizing her proposal was rejected, Sunbae grumbled, but obediently opened her mouth and covered the tip of my cock with her lips.

“Haaap.”

“With her small mouth, she took my cock deep inside, and diligently moved her mouth and tongue.”

“It was an impression I’d had before, but there really was no word that described her appearance better than ‘a hamster holding a banana’. She was already cute, but Sunbae, now exceptionally cuter, with my cock in her mouth, began diligently performing fellatio.”

“Slurp. Slurp.”

“Ummm, umm….”

“Sluurp, sluurp.”

“Huuuup, up, umm….”

“With her cheeks puffed out, stuffed full with my cock, Sunbae’s tongue movements instantly moistened my cock with warm bodily fluids.”

“Resolving my morning wood with Hwayoung Sunbae’s fellatio. This is truly the height of luxury in many ways.”

“Furthermore, perhaps because she had already sucked my cock three times, Sunbae also appeared quite skilled at fellatio. She looked skilled.”

“I could feel the sensation of her tongue going under the glans and licking my cock.”

“The fact that she knew how to use her tongue boldly proved that she had already graduated from beginner-level fellatio. It was a movement that confirmed it.”

“Seeing how she focused her attention on the glans rather than the shaft, it was clear she knew exactly which part men find stimulating. She knew.”

“From the moment I started feeling her soft cheeks and the sensation of her smooth tongue, a few minutes passed.”

“My cock, already erect from morning arousal, was soon filled with the desire to release semen into her mouth. It was filled.”

“I’m gonna cum, Sunbae!”

“Huuuuup!”

“As soon as I said I was cumming, she seemed startled and tried to pull her face back momentarily, but I reflexively grabbed the back of her head and pulled her closer to me.”

“With one cheek completely filled by my cock, I vomited the semen accumulated overnight into Sunbae’s mouth.”

“Hooobuuuup…!!”

“Perhaps she still wasn’t used to the taste, Sunbae tapped my thigh in distress, but a promise is a promise.”

“Only after squeezing out the last few drops of semen from my cock did I release the back of Hwayoung Sunbae’s head, who had my cock in her mouth.”

“Good work, Sun…”

“Phoo, baaek…! Heubaaeeek….”

“……”

“Ugh, ack…. It feels like tadpoles are crawling inside my mouth…. Buaaek….”

“Seeing Sunbae, tears welling up in her eyes, as she spat the collected semen into the potion bottle, made me feel like I might develop strange tastes. It looked like it.”

“She’ll probably get angry if I say this, but I found myself hoping this research wouldn’t go well. The thought just popped into my head.”

“That way, next time we meet, she’ll have to perform fellatio again to get my semen.”