Surprisingly Complex: M.S.S.S Episode 19
Sorry to disappoint all you three people reading, but this arc is phenomenally self-explanatory. It does generally a better job in explaining itself than I do explaining it, so there's not much of a point.
All I can think about is theorizing about Izuko Gaen, and well... That's stuff for the Suruga Devil arc, as we got a hint for her identity before...
But anyways, one thing I would deem interesting is the actual order of the second season. Why? Because only now, already months after the actual arc, we're getting our answers on those long forgotten missing chapters in Nekomonogatari White.
I would highly theorize that the existence of the "darkness" is very important to the transformation of Araragi, the result of which we saw at the end of Nekomonogatari White. Remember those torn-off clothes? Those are the ones he is wearing right now, just... Destroyed. And the fact that he has the Kokoro Watari with him means he either pulled it out of his own ass or got re-linked to Shinobu somehow. We will also hear the reason why he is so late to that meeting, as now we've been shown what he did the days before. It's... The second evening of the Nekomonogatari White going on as we watch it. It would be ingenious if we would've seen the house fire somewhere in the background though.
Let's see what a new week is bringing about.