Kase's such a puppy dog for Yamada. Any other yuri manga couple not walking home together plus not immediately agreeing to living together would spell at least 5 chapters of angst and drama.
I really like how the protagonists are sane human beings rather than melodramatic caricatures.
That's so true. Yamada is only concerned about the senpai given Kase has never brought her up before, it's natural to just be curious.