@299792458
I agree completely. In my opinion, Kaji's character development is one of the best, if not the best in all manga I've read.
Considering how the manga doesn't focus on him very often and how fast he went from scared amateur to "who is this guy" you would expect that there would be some insane jumps in his development, but somehow there are not. The way the author writes him is incredible, since even now we still see hints from old Kaji sometimes.
In this chapter, I as reader had no idea if the necktie will scare him shitless or he will remain calm. But if you think about it, his current reaction makes perfect sense.