These two really do suck at communicating.
...I think, that's an established fact by now. But I do love Kase trying to evolve by doing the first step (and leaning all over the table to position herself in Yamada's view), reading Yamada, not coming to wrong conclusions but the proper ones in a timely manner and adressing the issue.
Another detail, it seems Kase was just about to text Yamada when she walked up to the other group.
..so, yeah, I think, Kase finally learned a widdle lesson and is actually evolving her own relationship-communication skills. Slowly, but steadily.
What can we expect for the next chapter? The girls sneaking out at night to meet up for some handholding ?