
What are you saying? It's a manga....
I'm really confused... Not all the characters in manga actually look Japanese, it's just this individual mangaka's drawing style. But regardless of if they do/don't it's implied that they are Japanese, unless otherwise stated. Even when they're are characters from different countries in manga (talking about manga in general) the drawing style (head shapes, body size, ect) normally stay pretty consistent.... So... Yeah.
I'm more confused on why you pointed this out in the first place, I mean, I'm not trying to be rude but, I'm not exactly sure what you are trying to say. Any person that ever opened up a manga wouldn't think twice about it, because manga almost always have exaggerated features— it's part of the drawing style. I'm almost 100% sure that it has nothing to do with ethnicity.
Anyways, as you've stated, it is a very controversial thing to say (I guess) but I think prior knowleged about manga, and Japanese culture would be needed to understand, I mean I don't really think (nor have I ever thought) that it was a big deal. My personal opinion is that it doesn't matter ╮( ̄▽ ̄)╭

Also, i suggest doing research for yourself before making comments like that, or else you could risk seeming very ignorant. When it comes controversial topic like this, people can to be very rude. So it's better to learn first for yourself before potentially offending other people.

Funny, I was just thinking how ignorant you sound.
I pointed out a very real phenomenon that manifests in many, many mangas, across a broad range of genres.
Your knee jerk reaction to my comment does not negate the fact that the main characters in this story were drawn with distinctly Caucasian features.
Now you can choose to deny that reality or even make nasty remarks about me, but none of your negative reactions will make what I wrote any less true.
My observation was in no way a slight to Asian people, nor to the artist; it was merely an observation, nothing more, nothing less.
I suspect your choice to be offended by what I wrote is a reflection of your own personal prejudices, which I would prefer you refrain from projecting onto me.

Thanks Captain Obvious.
You answered your question already.
And of course, it's the mangaka's drawing style and ideals for their characters.
Btw! Do you realize how similar the characters' face structures are??? The only difference is their hair style and maybe eyes, and their built. (Depending if they're the uke or seme.)
But damn, setting that aside, the story line and art though....
This is like the yaoi version of Pretty woman, but with two Japanese dudes instead of Julia Roberts and Richard Gere.
Although, did anyone else think they didn't look very Japanese? I know it's controversial to say this, but neither man looked like any Japanese person I've ever met.