stop hating on shinoa because she likes yuuichiro. i'm sure she knows that she doesn't have a chance. heck, she even tries to throw her feelings out the window. i really think she's a cool character but you guys make it all about her crush, which is yuu and that's honestly the most annoying thing. you guys make her seem like some spoiled brat, but she really isn't. i understand hating her because she doesn't match your ideals but hating her because she "gets in the way of your ships" is simply immature.
in this manga: vampires can grow quickly depending on how much blood they have, meaning that they age quick too. assuming that raine is 26, joel might've grown into being 20-24 (since he had lots of human blood) so i don't really consider it as pedophilia, it's just a vampire ageing quick. (why is it spelt as ageing)
so i'm guessing that if a human gets their blood sucked many times then they become pregnant rather than doing intercourse no matter what their gender is. their child becomes like their father, a vampire, and takes their animal form. when they're born, they take the form of an animal before getting a human body and turning into it after a couple years. just know that i'm guessing and this probably isn't confirmed.