I Went About My Life Normally Without Noticing It Was a World With Few Men, and Things Went Terribly Wrong - 15

Chapter 15: Plan for Investigation and Experiments

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As I stood there with my resolve hardened, it seemed Yoshino-sensei had something further to say.

“Actually, I have a request for the two of you as well.” 

“What is it?” 

“Well, it pertains to the subject we just discussed. If you two, as a couple, plan to have multiple children in the future, I would like to conduct a study to continuously track the changes in the rigidity time.”

I see. She wanted to verify the conjecture she just made. Personally, I didn’t mind either way. The burden would fall on Yuka-san. Needless to say, the woman WAs the one who suffered the pains of childbirth, and since only the woman knew when the rigidity of the reflex had faded, I left the decision to Yuka.

“Yuka-san, what do you think?” 

“Eh? I don’t mind, but… Hikari-san, will you really keep giving me your seed even after I’ve given birth once?” 

“If that’s what you want, Yuka-san, then of course.”

What, did she think she’d be discarded after one child? I suppose it couldn’t be helped given the common sense of this world. People who had multiple children were rare, which probably meant men usually didn’t have the luxury to focus on a single wife.

Actually, it was a bit late to notice, but the women in this world were incredibly proactive about making children. Even though she was in heat, Yuka-san tried to get herself pregnant the moment she found me. Her decision making was incredibly fast. Even Celly made up her mind upon our first meeting.

Why is it like this? There is no answer to be found anywhere. It’s not in any book, and I doubt anyone I asked would know. This is because I am the only one in this world who recognizes the question—”Why are the women in this world more proactive than those in my original world?” 

No one else would think to compare this world to another. At any rate, that was just how common sense worked here. When a human woman saw a man, she wanted to be impregnated. No one suspected that to be unnatural.

Therefore, if there was an answer, I was the only one who could search for it. This was something I thought about later when I was alone and a few simple reasons came to mind immediately. One was that men had been precious for a long, long time. If you let one slip away, you never knew if you would meet another. Failing to meet one meant staying single for life and failing to leave offspring, which was biologically fatal. If a chance only came once in a lifetime, there was no time for leisurely contemplation. Only those who were quick to decide left descendants, and that trait survived through the process of evolution.

A more modern, rational reason was that the burden of pregnancy, childbirth, and child-rearing was significantly lighter than in my original world. As seen in the discussion about menstrual leave, a society by women and for women had been established here. There was much more understanding for those who worked or went to school regarding pregnancy and child-rearing. There was no prejudice, the hurdles were low, and the systems were well-developed. Medical technology was also highly specialized and advanced, making the burden of pregnancy and the pain of childbirth much lighter.

For these reasons, I decided to accept the situation for the time being. And in doing so, I realized I didn’t need to feel any hesitation or guilt about impregnating these women.

At first, I had just gone with the flow as Yuka-san and Celly straddled me, and I felt as though I was merely being milked of my seed and making them pregnant. I’d fallen into a way of thinking that was almost like an evasion of responsibility, telling myself it couldn’t be helped. But in truth, perhaps I should had been more proactive. Since the women desire it, shouldn’t I be the one stepping up and saying I would keep impregnating them more and more?

Well, even if I think that, I can’t suddenly change my behavior. I’ll just do so when the opportunity arises. It’s something I should learn from the women of this world.

“Then, I take it that you’ll cooperate with us?”

“Yes. After all, I owe you a debt of gratitude, Professor.”

“I appreciate it. Though it is I who am in your debt.”

So, what were we talking about? Oh right, if Yuka-san wanted to have enough children to start a soccer team, I would be all for it, and we would cooperate with Yoshino-sensei’s continuous study.

“Since we’re at it, let me ask one more favor. This one places an extremely large burden on Wago-kun, so please feel free to decline if you’re not comfortable with it.” 

“What is it? I’ll listen to what you have to say first.”

Now that one matter was settled, Sensei looked at me again with a hesitant expression. 

Well, I’m already involved, so I might as well hear her out.

“I’m planning a large-scale experiment.” 

“An experiment… What do you mean by that exactly…?”

Hearing the word “experiment” from this professor, the first thing that came to mind was what happened earlier. The experiment where I ejaculated inside Celly and she went into a mindless, screaming frenzy.

“Yes. I want to verify the principle found in the previous experiment, whether a woman who receives an ejaculation deep in her vagina will invariably reach an orgasm.” 

“How large of a sample size do you need for that?” 

“I’d like at least three digits.”

In other words… She wanted me to ejaculate inside more than a hundred women, making them climax and get pregnant! Since I had to hit the cervix with semen, there was no way we’d use condoms. 

Actually, does the concept of condoms or contraception even exist in this world? 

If we didn’t use contraception, the pregnancy rate during heat was almost one hundred percent, which means I’d be having the same number of children as the time I participated in this so-called experiment. 

Moreover, gathering the female subjects would naturally be the job of the professor as the lead researcher. I wouldn’t have to do anything. Women who consented to pregnancy would be gathered and presented to me. I would just have to go through and impregnate them one after another. Could such a convenient arrangement really exist?

“I’ll do it.” 

“Hikari-san!?”

I agreed without a second thought. This was the definition of a “served meal.” Though, I did try to say it with as much gravity as possible. Yuka-san looked at me in shock. Was a prompt reply a mistake? Answering too easily might make her doubt my character. 

Since Yoshino-sensei was going to be my mother-in-law, I wanted to keep a good impression if possible. No, she was the one proposing the experiment, so wouldn’t a prompt reply be better for a good impression? 

Besides, she doesn’t think this is a bad thing at all.

“Really?! That’s a huge help. You’re the only male I can ask, so if you had refused, I would have had no choice but to give up on the experiment. I can’t offer much in the way of a reward, but…” 

“I don’t need anything like that. This is a request from none other than Yoshino-sensei after all.”

Oh, she’s happy, so that’s good. As for a reward, this experiment itself is basically a reward for me. 

If I received anything more, I’d probably be struck by divine lightning.

“There are mountains of things to verify. For example, whether being in heat matters or not. Also, the amount of masturbation experience, race, age group…” 

“Eh?”

I felt like I just heard a word that shouldn’t be there. 

Age group? Does that mean I might have to deal with much older ladies? Th-This is bad. The divine lightning struck immediately. Should I try to back out now?

“Haha, I can tell what you’re thinking, but there’s no need to worry.” 

“I-Is that so?” 

“Yes. The template is the same as the previous experiment. If you or the other subject wishes to stop, we cannot force it.”

Ah, right, that was the basic clause that was always in the consent forms for psychology experiments. That meant if it was a partner I wanted to refuse, I could switch. Somehow, this experiment was starting to feel more and more like a high-end brothel.

“Besides, for this experiment, it’s necessary for you to have an erection and ejaculate. We cannot conduct the experiment with a partner you don’t find sexually attractive.” 

“That’s true.”

To summarize: from the women who consented to pregnancy that the professor found, I only had to choose the ones I wanted to do it with and ejaculate inside them. I was honestly amazed that such a thing could be done as a university experiment.

At any rate, the broad strokes were decided. It was already late. Yuka-san, who had been dozing off, had fallen fast asleep before I knew it. We’d settle the details another day. We exchanged contact info, and it seemed we were done for today. Sensei called out to her students and prepared to leave.

“Well then, let’s meet again soon. Oh, I’ll leave my daughter here since she has that report to do. If possible, please take care of her.”

Leaving those words behind, the professor and the others departed. Celly was left behind in my hospital room. It seemed she had finished writing her first report—the account of our sex from earlier.

“Can we do the next one?” 

“Well, I guess I can manage…”

It had become quiet and I was suddenly feeling sleepy. Checking the clock, it was 11:55 PM. The date was about to change. I’d been so excited all day that I hadn’t had time to feel tired, but I was reaching my limit.

“Ugh.” 

“If we hurry, we’ll make it. The ninth ejaculation in twenty-four hours. It will be a historical record.”

As I was stretching, she suddenly grabbed my penis. Celly started a handjob and forced an erection out of me. The moment I was hard, she straddled me and swallowed my meat with a lewd “squelch.”

“Ngh… It’s… It’s still too big.” 

“Are you okay?” 

“…My stomach feels tight.”

Apparently unable to move immediately, Celly clung to me, enduring until she settled. Stroking her head, I glanced over to check on Yuka-san. Good, she was still asleep. It wasn’t supposed to be something I felt guilty about, but I couldn’t help but worry. Aware that I was doing this secretly right next to her, my penis grew even larger. Noticing it inside her, Celly looked a bit pouting.

“The one doing it with Hikari right now is me.” 

“Sorry, sorry. Does it bother you?”

Even in a society where it was natural for many women to share one man, feelings of jealousy remained. 

Come to think of it, the evolutionary significance of jealousy is probably the instinct to monopolize a mate to ensure one’s own offspring are left behind. 

Thinking about it that way, it was only natural to want to pull the attention of a precious man toward oneself. When I tried to soothe her with pats, the sulking Celly came to steal my lips instead of answering. It was my first kiss with her. Taking heart from the fact that my penis twitched in response, Celly began to move her hips slowly, if awkwardly. Her small vagina clung tightly to me, and my arousal spiked in an instant.

“Ngh… It’s coming. I’ll endure it this time.”

Sensing my impending ejaculation, Celly held her hips still and stared at me, breaking the kiss. Her gaze was serious, but she seemed much more composed than before. Her face, which looked youthful for her age, was tinged with something seductive. Was it because she had already experienced an internal ejaculation once and was now carrying our fertilized egg in her smooth belly?

Intending to drown that fertilized egg, I unleashed my white fluid against her hard, tight cervix. The triumphant look of having made me go with her own pussy lasted only a moment. The next second, Celly’s entire body gave a jolt and she let out a groan that seemed to come from the depths of her soul.

“Nguuuuuuuuuuuh!?” 

“!? What is it!? …Ah, Yoshino-san, what do you think you’re doing on your own?!”

Yuka-san, who had been startled awake by the loud cry, snapped at Celly once she grasped the situation. But Celly didn’t have the energy to respond. She slumped onto my chest, her breathing heavy.

“Huff, huff… It was so close—c’était bien juste—but… but I managed to endure it… Ngooh.” 

“Don’t ignore me, Yoshino-san!”

Can you really call that “enduring”? 

Well, I suppose so in the sense that she was conscious and speaking. The fact that she was switching languages in the middle of a sentence seemed to symbolize her panic and the impact of the sensation. It was certainly partly because it was the second time, but inwardly, I was considering another reason.

My abnormal stamina was remarkable, but I still needed some recharge time. Through doing it with Yuka-san all day, I’d learned that it took roughly over two hours for me to return to my original volume of ejaculation. Of course, the level of excitement also greatly affected the quality of my ejaculation. Basically, the condition of the setting was an important factor to consider. 

When we were doing it at home, Yuka-san would sometimes scream and sometimes climax relatively quietly. The reason she had exposed such a terrible face and screamed so loudly earlier that she was suspected of drug use was probably due to the volume of my ejaculation at the time. Being carried on a stretcher while desperately trying to hold it in, and finally ejaculating while being watched by the trainee Fukakusa-san as she pressed her chest against me… The volume of my semen at that moment was undoubtedly the largest of the day.

The same was true for my first time with Celly. Getting to do it with a beautiful half-Japanese girl I’d just met, and ejaculating while being filmed climaxing under the supervision of police. That was exactly why so much came out, and why her reaction was so intense. Compared to that, this was the second round, and only an hour and a half had passed, so there wasn’t quite enough stimulation. I think that was also part of why Celly was able to endure it.

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