Well that's real, there is some people who get both female and male genitals and that's called hermaphroditism you can search it in Google and or on p*rn so you can see clearly they're genitals I did that once when I got curious of how it looked like. And one more thing the one in this manga is one of the examples of it or how it looked like some have dominant feminine gene and some the other so when they have a dominant gene like in dominant gene they're p*n*s is small, that's one of the example and one more is not invincible or not easily recognizable which is they only have penis and has an ovary inside their stomach and vice versa. Their body differs too they can have a feminine look like in a female hermaphrodite they have boobs while men's don't that's what dominant gene is too
(Sorry for my bad language/grammar English is my second language)
And one last thing hermaphroditism is one you are born to not surgically like "boy meets girl" is because his penis is surgically replaced by vagina so meaning his real genitals true form is long gone and here in this manga it is also fantasy because of the pill and that can't happen we can only change our body by surgery, but the look of the genitals in this manga are real and that's what we call hermaphroditism
what?he has pussy in his ass?no wonder the comments below said it's like boys meet girl