The only reason Saori's sad is because she denies herself the truth. She's in love with Yurika but insists on telling herself that she's only interested in guys. Once she embraces the truth she'll find her happiness too.
For chapter 20 I wouldn't go as far as saying it was het. I mean just putting in a suckling tag would suffice. Most of the ecchi stuff done was female to female so...
Yurika should just give up on trying to be hetero and become a true blue lesbian already. She attends a womens college and the whole school is ready to support her, she can't escape it at this point. I mean she's even gotten use to doing it.
It's Dowman Sayman. This is probably his most tame, understandable work, if you can believe that. It was published in Comic Megastore H, which is actually an important point in getting one of the jokes (it's obvious if you read it).
I'm surprised to see this on here but in a way I'm not. This is truly some hilarious stuff without a doubt imo.
It's yuri! So of course it was going to make its way on eventually.