A Parallel World With a 1:39 Male to Female Ratio Is Unexpectedly Normal 【R18】 - Ch. 70 - Junior Gyaru's First Time – Part 2

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So, to be above replacement level in this setting you would need to make 80 babies. That's basically a full time job not counting sperm donation. That would mean before the tech existed rather than hunter gatherer civilization, it would be a sausage delivery civilization.
 
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So, to be above replacement level in this setting you would need to make 80 babies. That's basically a full time job not counting sperm donation. That would mean before the tech existed rather than hunter gatherer civilization, it would be a sausage delivery civilization.
Above replacement, sure.

If the ratio of birth is the same like the title says (1:39), then a man still just needs to birth, at least on average, 40 children to have a chance of birthing ONE son, which should be enough to replace the father.

Can't do anything about it if its this world's human genetics, unless something in Sou awakened his latent manliness when his MIND was isekai'd, upping his chances of birthing males.
 
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the promised leopard print bikini ∶ fulfilled

so is her baby batter room
 
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So, to be above replacement level in this setting you would need to make 80 babies. That's basically a full time job not counting sperm donation. That would mean before the tech existed rather than hunter gatherer civilization, it would be a sausage delivery civilization.
That assumes that the ratio shifting isn't the result of a relatively recent development, or that the women of this world aren't horribly immortal, and didn't invert the whole "barefoot and in the kitchen" mentality earlier in history. The fact that most men seem suspicious of women implies to me that men's rights are potentially a recent development in this world's history, and until relatively recently men were basically insemination machines for some women.
 
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lol i feel like a friend would be mad if they got a selfie of her naked as opposed to zooming in on satou's dick/chest or so XD;
Oh are we getting a Gyaru run? I wouldn't mind Gyaru Hinata or Sakura.


She gonna piss off senpai.

well, if 'senpai' is just the other receptionist that works with her, she prolly wouldn't be as irritated, versus it being just a classmate who's never interacted with another man (tho this kinda thing seems like it'd def end up making her [senpai] show up at her work place to pester or 'coincidentally' trying to run into him lol)
 

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