
Before the act, a person should ask the other if it's okay.
If the permission is given, then they do the deed
but if someone says to stop, then the other person should stop.
If permission was given before and suddenly the person panicked and they stopped, it's not rape.
If they continue despite the protest, yes it is rape.

If your partner has those tendencies then it's better to talk about it beforehand and decide on some other "safe words".
I know that safe words often are used in BDSM so they might feel like something strange, but in vanilla sex you can also use safe words, for example "red/yellow/green", red means to immediately stop, yellow to slow down and green to continue.
And yes, unfortunately a lot of romance stuff has rape which isn't discussed well in those mangas.

Please don't develop your morals around yaoi. Very few are realistic to how life is. Having sex with someone who's asleep is rape, continuing to have sex with someone who is telling you stop is rape. They are not real and shouldn't be taken as life lessons or manuals on relationships and sex. There is so much toxicity in these stories.

I know and I get your point. But I was trying to explain that it doesnt matter what kind of relationship youre in, since the person I replied to said that it would be "unfair" for the seme in a "normal relationship". However, no means no and stop means stop. But if the person wont listen to these words, then its rape. It doesnt matter whether youre in a lovely relationship or you have no connection to the pereson at all.

Yeah, that's why I didn't try to correct you or anything, I just added to it in case it needed to be said clearly for some people. ^^
So, in general: if any person stops giving their consent during intercourse and the other doesn't stop, it is rape.
If they stop, the one who wanted to stop shouldn't be in any way shamed, and the other shouldn't feel it is unfair and instead, try to find out what was wrong and try to resolve the problem.
Guys I am confused. two guys are having sex then the bottom says stop and freaks out. He didn't say anything before they started the act but during the act. Is that rape?