Responses
It depends. If the mangaka wants it then everybody can get pregnant. I do mean everybody, no exception.
As far as I know, those kind of books are usually for demonic purposes. Shimoga is more sensitive/sixth sense so he could feel the 'weight' of it and can't helped to be afraid.
Naiya is most likely a demon, even stronger than the snakes. His name is blotted because it's a name that a human can't pronounce.
Hahaha though I'm just guessing from demonic cult horror stories for references.
1st story: I’m happy that Koharu didn’t turn into an alpha and that they’re living a loving and fulfilling life with each other and their future children! (Someone below said they can’t get a baby (Idk if they know of an extra or something that we don’t) but if it’s bc they aren’t alpha and omega- it’s still possible for betas to get omegas pregnant. I know of some stories that say that only alphas can impregnate omegas but this author is definitely hinting that in this story, they can get pregnant.) ヾ(❀╹◡╹)ﾉ~
2nd story: So he’s a tentacle human-monster? Why did he cry when he held the book? What did snake man say? These unanswered questions ;-; Like, it had so much potential but not enough time;-;