No, frankly it would be weird if they were.
There are some implied virgins but the girl’s past experience isn’t really made that big of a deal.
Except on select scenarios, like the girl that used to be a pornstar.
You gotta be a bit more specific.
Bear in mind, these “young characters” are young adults. So make that what you will.
If you somehow meant the characters presented as actual children. They won’t be lewded, ever, end of discussion..
Anyway, Arc doesn’t (and I doubt he ever will) bother detailing out the girl’s sexual history before meeting the protagonist.
Aside from obvious ones, like for example Madison having kids, or Gwen having a fiancee and being this much of a horndog.
But that’s pretty much it. No “virgin blood”, No “omigawd u my first i luv u 4eva” type shit.