Sui-Chan pulled out an UNO reverse card! It was super effective, the hooker got hooked instead!
New girl at the bar also pulled out an UNO reverse card! It was super effective, the shy bottom just became a top!
I’m having fun with this! Let’s see what these girls’ drama will be! And can or protagonist live her life without being screwed?
Definitely not lol. But it’s bound to be fun to watch how she keeps it together~

I can confirm it'll be a square.
Surprising! Don't think I have read a yuri square before.
I feel like it'll be the main 2 who have feelings for each other and then 2 girls with unrequited or "losing" feelings. If that's how it goes, I've seen that a fair bit, though it's not always treated like a love square in that scenario. 
"Our Love is Disgusting," for example, has that right now. Same with "My Girlfriend Isn't Here Today," and "Destroy it all and Love Me in Hell," also. I was just reading "Letters on the Wall," and that too has a technical square (though a guy was on one of the two ends). Even "There is No Love Wishing Upon a Star" sort of has this too. As long as the MCs are open about potentially liking each other, you get one unrequited drama stirrer for each protagonist normally, for maximum fun.
Yeah, when talking about Yuri squares, I’m reminded of those stories, too! (But especially “Our Love Is Disgusting”, that’s pretty much a solid square a few chapters in.)
It’s fun because although It’s a “square”, we already knew the main pair to root for from the beginning. And the rest of the characters are just sort of “interacting with the two MCs” and are along the way while they grow and technically create obstacles for the main pair.
But seriously, love triangles are already super hard to manage, because when you have a character who’s obsessed with another and a third one who’s obsessed with the first character, I just don’t know what to do because I want the third one to have their share of love as well, especially when they’re a genuinely good person and devoted a lot on person 1. (Well, for me personally anyway. That’s what I thought.) Because in a sense, unlike love squares or straight up harems, love triangles have much more screen time to flesh out each character’s style and motivations, and tell us why should we support them, and have them influence all other characters in an way which we can’t ignore … and even in some cases (some very good cases, if I may add) the line between good and bad in objective and subjective ways are not always clear so we don’t know who’s the best for who, and are at the mercy of the author.
That’s when we know it’s an excellent work.
And the other stories you mention had love “squares”? That’s rather neat! I have to check them out!