I'm not the sort of person who admits to being afraid easily, but not having that response at all would be a little worrying, I think. For me, at least.

[...]

Though I suppose you're used to it, ja? I suppose I'll just have to be a bit more careful when I watch your back from now on~!

[It's obviously supposed to be light and teasing and while it does manage that, Jaeger's expression doesn't quite make it all the way there.]