Well, Fujoushi and Chiri are a couple. There is no mistake about it. I mean, it's not even subtext.
I'd say that Meru and Kaere have definitely a thing going on, but it may just be a rivalry thingy. Even though there are some serious sexual undertones in it. They have done it at least once. Besides they do seem kind of special to each other, you know. And both of them react to each others impulses in a unique way.
I'm not going to speculate about the NEET, but it's commonly known fact that losers would accept anyone regardless of gender.
Also Abiru and Kaere seem to be getting along a little bit too neatly. I suppose it's okay to try different thing before going steady with Meru, but this is going a bit too far. Let's face it. Abiru is a freak.