But there was some stuff I didn't get on page 73 -
1) Might've botched the translation, but it's basically Eiko making another analogy on how her attempt to tease Enami backfired. Kittens may be cute but they can still scratch your hands up real good if you're too careless.
2) Eiko thought Enami was drunk when she was fooling around, but it is confirmed she wasn't. Part of the fun is that you don't know what she's truly thinking.
3) Filthy as in "dirty cheaters".
4) Nishimura is a crossdressing male (see ch24). He hasn't really gotten enough focus thus far to determine what his deal is (ie. sexuality/gender identity/etc.) but he seems to be an LGBT ally if Enami's comfortable getting drunk around him.