As for myself, I don't really read it for the yuri. The sex of the two protags isn't really that much of a big deal with me. What I really enjoy is the cohabitation. Comfy SoL cohabitation is always something I enjoy.
I totally agree.. although i do hope there is yuri but even if there isnt I still enjoy it with all the drama and comedy.
Furthermore, (just my thoughts) I think there is need to have some drama between Keiko and Ran; maybe that way "yuri" will stand out more.