The shopkeeper’s story turns out to be pretty standard…the story of the assassin who finds love, but can’t escape his past isn’t anything I haven’t heard before. I’m not entirely sure what he was trying to accomplish by telling that to Kaneki, though. Some sort of last request?
It looks like they’re preparing for some sort of standoff between Anteiku and the investigators. I’m assuming Anteiku loses and this is somehow used to move Kaneki into some kind of action. I suppose it’s possible that Aogiri and the one-eyed Owl join the fight and build it up into a final battle, but that just doesn’t seem as interesting in my eyes.