Nya-chan
Well, absolutely nothing happened storywise since chapter 32. Just Ran and Keiko living like a married couple, without being married or even being a couple.
That's the problem. "Nothing happened." Like others have mentioned, plenty has actually happened. Slice of life can look like filler when in reality, the filler is actual story being told. We are seeing the characters interact with each other. More insight into their daily lives, how they speak, subtle cues about routines, how they deal with daily problems, how they cope with certain things, what they like, what they love, what excites them and what doesn't. Slice of life is that, a look into the daily life of characters. This story just happens to capture life pretty damned well mixing the mundane, the tragedy, heartbreak, drama, comedy, and doldrums of daily life. And lately, I'm beginning to think this belongs up there with the greats of the slice of life genre, Yokohama Kaidashi Kikou and Aria (both with female protagonists... interesting).
The story doesn't JUST revolve around their pasts, it's always moving forward in their daily lives as well. For example, we found out Keiko really doesn't know a whole lot about Ran despite living with her. In fact, she maybe doesn't know anything at all besides the facade Ran appears to be putting up. We also learn that Keiko appears to be finally pulling through her nightmares and Ran is clearly worried about her to the point she wants to drown her worries in booze. Seriously, going by your idea of story in Stretch, this was MAJOR story development and it was totally passed off in an off-hand kinda way. Shou gave use chapters of back story to Keiko and these nightmares and in two pages, Keiko appears to just be over it and we're not presented with some big dramatic cliche, "aha!" moment. One day you just kinda go, "Oh! I'm apparently over that issue!" without ever realizing the exact moment you got over it.
The past few chapters have shown just how close these two are and yet how distant from each other they are as well. Keiko is seriously thinking about her future and Ran is actually a serious and deep person as well. Both discovered something about each other they never knew and both are comfortable enough to horse play in the bath. There is plenty of story going on. And while like many, I would LOVE to see these two start a romantic relationship, I'm just enjoying the ride. However, in regards to a romantic relationship between the two... I feel like it'd be very physical with little to know maturing on their part. I think it may have to do with overcoming their pasts and problems that stemmed from them before taking that step into a relationship... but maybe that's just me and they could start before either one is truly over their problems?! o0