Oct 6 mostly involved implementing one of the characters' Free Time modules into the story and squashing bugs around it. Why is Free Time in modules and not just written into the story? I call these segments Modules because they're meant to be modular. Each of these segments of one-on-one time with these characters are written so that they can be called at multiple points in the story and not be jarring or out-of-place.
For instance, Chapter 3B has two different characters (Al and Kat) that you can spend time with, and you can only choose one before the story progresses. Both Al and Kat each have three different Free Time segments that can be called at different points in the story. Let's say you're romancing Al, so you're going to choose Al during this chapter and get his first Free Time segment. Later in Chapter 4 if you pick him again you'll get his 2nd Free Time segment, and in Chapter 5 you can choose him to get his third and final Free Time segment.
BUT what if you're not romancing Al? What if you're romancing some other character? Chapter 3, you didn't spend time with Al. Chapter 4, no time spent with Al either. Chapter 5 rolls around, and you think "Oh well, might as well spend some time with Al now." If you pick Al in this situation, because you hadn't picked him before, you'll STILL get his 1st Free Time segment no matter what chapter you're in.
So yeah, that's the Free Time segment. It's not SUPER hard to code, the difficult part is writing scenes with characters that can be plugged in to different parts of the story.