By any chance, are there threesome yaoi mangas with 2 ukes and only 1 seme?

uhhhhhhh
theyre pretty rare cuz yaoi's all about penetration and a 3some with 2 ukes doesnt rly work cuz only 1 uke would b penetrated and so the other uke loses its meaning :P

Didn't Caste Heaven had a threesome with two ukes though Atsumu had to turn Seme in that

mmmmm...... but wouldnt that make him a seke?
i know a few manga with 1 uke, 1 seke, and 1 seme....
speaking of which, oshioki gakuen has a fuck train with like a hundred sekes :D
bruh that was a rly weird and funny manga

There are some most of the time it's seke couples with a partner or such. You can look in my list for Kaiken Fortune I think it is and it has three people getting it on and all three like to top and bottom.

http://www.mangago.zone/read-manga/choco_strawberry_vanilla/

wrong reply sumimasen ><

http://www.mangago.zone/read-manga/love_me_hard/

if you don't mind doujin..
http://www.mangago.zone/read-manga/yowamushi_pedal_dj_doushite_kounattassho/
http://www.mangago.zone/read-manga/togainu_no_chi_dj_open_invitation/

True
Omg looking that manga up right now sounds interesting

are you okay with bara, there

http://www.mangago.zone/read-manga/bachi_bachi_kijima_hyougo/ 1st ch
and this is what I think of 1 uke, seke, and seme
http://www.mangago.zone/read-manga/kuroko_no_basuke_dj_vanilla_shake/
http://www.mangago.zone/read-manga/rumble_rush/
http://www.mangago.zone/read-manga/ikenai_otoko/
sorry I just remembered this :P