I think she is female not male cuz he have ovaries not balls , and ovaries/womb = period =...

He/She's clearly intersex so their sexual organs aren't 100% one only sex

if s/he gets period every month then they pretty much female , I think that's why s/he reacted when he saw the sanitary pants.

in-ter-sex. in-ter-sex, "oh they have periods must be a girl" that's just stupid. sex is not binary.

I think you sound more stupid , men don't have periods and can't get them , so if she have period mean she have womb and ovaries mean she produce eggs every month , mean she can get pregnant , mean you are stupid if you think she anything other then female . . she should just get hormone treatment and repair surgery and remove her dick and bamm she became full female /end

they are not a male nor a female, the I in the LGBTQIA stands for intersex. it's real. and there is nothing wrong with it.
Sex or gender, it doesn't matter, neither of them is binary. Even most scientists believe so.
Also if we really have to choose, he is definitely a man, because he wants to be a man and is clearly upset with his female functions/organs.
Also, there are men who get periods and such, saying they must be female if they do, is very transphobic. Which I think is especially unacceptable from someone who finds joy in reading about homosexual relationships.
Please be more open-minded.

their wasn't a I in the LGBT don't add letters as you please , also this is not mental issue this is biological so they don't really relate to LGBT community in any way .

i mean some are born like this even this guy https://m.reddit.com/r/casualiama/comments/1g3h58/i_am_a_hermaphrodite_i_was_born_with_both_a_penis/

if you scroll down the comments in that page , you would see the guy identify as gay man , he doesn't have breasts , he only eject from his penies , he doesn't get periods , he over all can't get pregnant ... so that person is 100% male and he can get surgery and fix that part and he can live his life as male with no probelm he also said that he can get girl pregnant that's 100% proof that he not biologically female and can't be even if he have full looking vagina if he doesn't produce female hormones and mature like female breast englagerd + periods then he not female .. you can never be both female and male at same time .

even with that reasoning, nowhere in this manga does it say, the main can actually get pregnant, the other dude is not a credible source.

Hi! I think you should read this manga so you'll become more aware that there are people struggling between two genders the moment they were born. Since they only make up a very small part of the population, only a few people are aware of their circumstances and these people tend to hide because they know people like you will not understand. People with these cases are also seen participating in the olympics. Anyway, READ THIS MANGA OR SEARCH THE INTERNET. BE MORE AWARE.
http://www.mangago.zone/read-manga/is_otoko_demo_onna_demo_nai_sei/

There is an I in the LGBT+ community, we just don't write it, because there are many other letters like P, Q, A and as I said I. Please educate yourself before you say wrong stuff on the Internet, you might regret it later.

I agree with almost all answers in this post... Thanks guys, good job.

I know this manga is meant to be a litttle fucked up but calling him she is fucked up too. At least the Seme called him a guy (which the Uke seems to prefer).
It's a guy not a girl. And as for the biological stuff and anatomy of him, the author didn't make anything too clear. Can he even get pregnant? Who knows.
Even if he is biologically more female it still doesn't make him a girl.

Im the A and the Q in LGBTQIA, and the P actually. And you, you are incredibly uneducated and are expressing some extremly harmful, rude and insensitive bullshit. Google for fucks sake. This is not a matter of opinion, this is fact and you are wrong!

And also, "this is not mental issue /.../ so they don't really relate to the LGBT community in any way"
Did you really just say that? Did you actually really just claim that LGBT equals mental issues? What the actual fuck!!!

@sakurakou you really shouldn't insult others when you're the one who doesn't have their facts straight. Simply googling or doing any kind of research after the first person commented would have saved you from your display of ignorance :/ in any case, even your retort is invalid cuz LGBT is just the shortened version of the community cuz it would impractical to list all of them in the acronym. So yeah, since the I stands for Intersex and since the MC from this is part of that category, 1) it does relate to the LGBTQ+ community 2) he is neither male nor female because there are other sexes/genders (ever wonder why questions that ask for gender sometimes have 3 options? Male, female, OTHER) 3) sex is not equivalent to gender and neither are binary 4) you are honestly rather ignorant and misinformed about this topic and I highly encourage you to research more

Holy shit why do you even read yaoi? Lmfao if someone identify as male or female respect their wishes. Did he say he was a woman? Clearly he did not. The Uke is ashamed of that part of him. You can't just assume the gender of someone just because of what's down there. Oh there's a vagina or penis they HAVE to be male or female. No wtf, and I'm in A in the lgtbq nor am I cis. And gender does not limit to only two sex.

As a Yarichin Bitch Club fan, I am very ashamed that you have a picture of Yuri as your photo, tsk tsk---shame on you m8...

wtf , it's non of your business .

I agree, even if we are unaware of the situation your statement is true

Woow. I gotta say thank you for introducing me to this manga.entry it's a beautiful read.