For me,I just cannot stand bara. Whenever I see the bara tag on any yaoi manga,I would completely stay away.
I don't really like omegaverse, but read it if the plot is nice and good.
more than tags, I can;t stand cheater uke / seme
dudes and dudettees, yaoi and bara are two different genres.
Shota.
I never read omegaverse and Threesome tagged Mangas. Well actually, I have, but never again...
Some baras are really good though! Try reading this one:
http://www.mangago.zone/read-manga/ookami_shounen_to_hamu_no_hito/
Its realistic, well paced and depicts the struggles of being gay along with realistic fear of being rejected. No overly hairy buff guys-- just pure, angst, sweetness and a dash of comedy (sometimes)
Shotacon.
Shouta.
I love bars and everything else. But I cannot be subjected to the abuse of children. Fictional or not.
I also cannot professor and students, animals turning into human or any zoophilic type of manga.
Tragedy, shota, rape, Big no for them (╯°Д °)╯╧╧
Rape, threesome
Nah, i don't have anything that i dislikes/hate. I've read furry yaoi, bara, gorey yaoi, horror yaoi, i've seen shit more than anyone in here. They're a bunch of pussies
Shota
There's some authors I avoid but I have a high tolerance for most things.
Reverse shota.
I mean the little kid is the seme and the old guy is uke XD
I read a manga like this once, I can't remember the title though.
It was pretty weird. (￣∇￣")
Shota is a no.
What yaoi genre-tag you don't like/can't stand?
I don't like shota and bara at all and sometimes furry :P