[Meizicht]

Yes. The world has no females in it, remember? lol
It's kind of an implied but not really elaborated-on necessity, since humans aren't going extinct, even though there's no females.
So it had to be implied. I warn about it everywhere.
Lots of people are going to think I'm gross. ( if they don't already ) +shrug+

Edit: There are a surprising ton of people who like that, though. So I'm not really embarrassed by that. xD It might actually make the webtoon more liked since I have no problem crossing that line. It also makes sense with the story, since how else would it happen; it's not like they're growing children in gardens or something rofl