@feha
It seems like you misunderstood my comment. I know why that happened, i'm saying that it's weird. It's like killer found his target and after someone shows up near it he decides "well, it's his lucky day" and leaves. Lucifer definitely could do whatever to him because he is even more dangerous if he can't be killed, right?
About manga disjoint-feeling, i can agree, but you can think about it like "slice of life" and chapters are episodes. Somewhat.
Last chapter is 11.1, which means there should be 11.2 right?
Also 10.1 and 10.2 is one chapter i think (because in 1st part we can see "Chapter 10", not "Chapter 10.1"), but raw source saying they are separate (Why? I don't know)