Actually...I love bisexual characters... The "bisexuality" theme isn't nearly as developped as the straight or gay ones, it should be addressed waaaay more than it currently is....As ;(and this is just a personal theory); the majority of humans aren't actually totally straight, but just have different positions on the sexual orientation spectrum.
To me that just makes the whole thing more interesting :) I don't mind if there's a male x female sex scene, if it's a yaoi we all know it won't be the endgame, and usually the mangaka won't make it too long.
Some good examples (imo) :
- the Walker series, starting with http://www.mangago.zone/read-manga/are_you_enemy/
- http://www.mangago.zone/read-manga/koi_ga_bokura_wo_yurusu_hani/
ive tried other genres but return to yaoi. unfortunately I don't think itd really work. our mc being dumped by their partner cause the partner gives into what he thinks society wants him to be. or our mc, whether the uke or seme, is being used by their partner as a way to see what sex with a guy is like and then wanting to keep mc on the side or rejecting them once they've used the mc. the mc being fearful their new partner is gonna dump them for a woman. its like its a trope used to further the story along. theres some yaois by hinako- theyre who come to mind- where the mc seems bisexual but at the end you know they'll choose the guy.i think it could be done as a webtoon or a longer than usual yaoi but I think bisexuality as a trope and also the average length of a yaoi kinda keep the subtleties of bisexual love or sex from really being explored. theres more guys who are kinda asexual than bisexual. for me personally, I like for there to be a concrete ending. a defined couple. and I just don't know that your average yaoi reader will have the patience for it, even without depictions, or not. unfortunately bisexual partners are used to project fear in the mc or is just meant as a catalyst for the story. I think haru do wa ita(?) by nitta yuuka is the best at portraying bisexuality. but Iwaki is kinda asexual in his personal life whereas za previously hetero kaito embraces having Iwaki as his partner. and theyre reversible too. but theres another sub genre not really explored- reversible couples.theres a lot that could be done with yaoi and either its not portrayed or its not whats translated?
I know yaoi is meant to be a Boy x Boy thing, and that should be the focus of the story. But I've heard a lot of people complain when a character also has a thing for girls, or when there's a sex scene with a girl. I actually enjoy them and its kind of sad only a few yaoi mangas explore bisexuality, without the "i used to be straight but now im gay" thing.