Welp, that oyakodon bit got me thinking if the ending will actually be some sort of quad. I get the main pairings are Minori and Koko along with Mama and Yu, but I don't doubt the author has it in her to try.
I hadn't been keeping up and didn't realize this got more chapters, and was finished already.
Yu best girl, all the way, at least one of the scanlators agrees. She kinda-sorta ended up with Manaka but flirted with pretty much every other girl in the series, from Minori, Koko, Koko's mom Yurika, the other lolis...