I retract my statement, it was entirely an assumption on my part fueled by an interview where Arai said "Regardless of whether your partner is of the same sex or the opposite sex, it's impossible to completely understand each other", in reference to a conflict between the two women.
I've obtained the rest of the raws, and have skimmed it. I can't say confidently that there is yuri, and if there is it's definitely not a focus. The relationship between Kana and Fuyumi is complicated, but seems largely platonic. I'm picking up on some subtext, but I think that's it. Sorry.
It's also on hold until I can secure a better translator, I think I'm out of my depth a little on that front.