Responses
The only I can remember now is these two, but i both the seme dates the uke, so they are probably bi.
http://www.mangago.zone/read-manga/challengers/
http://www.mangago.zone/read-manga/little_butterfly/
try my list. straigth seme is actual nr 20-31 http://www.mangago.zone/home/mangalist/71507/
Im looking for yaoi's that have gay ukes and straight semes any ideas. Thank you