[Update: I just skimmed through the raw of episode 10 on youtube. They found an unanticipated way to trim Rubi’s story, and solved the continuity problem by quickly moving on to the next scene. The fight apparently used up the last of their budget, however. Wow, I’ve never seen character art and animation go downhill that fast. I notice that they worked Rubi’s song into it successfully, though.]
Continuing from where I left off, the last three episode titles have been revealed. It looks like:
So, 3.5 chapters of Rubi’s story will get crammed into episode 10, and whatever doesn’t fit will spill over into 11 along with however they resolve the continuity break at the end of episode 9. They’ll swipe the ending from chapter 19 to bring Rubi back in at the end of episode 13, which will put them on track to start a second series at episode 20 or 29.