Uhh?

So I think I set my expectations too high... I heard a lot of good things about it, I know it's based on a novel and the art is pretty so I was expecting something better honestly Because aside from all the other nonsense, how come I could tell the plot twist from miles away but the skilled and intelligent agent who should be on his guard can't?? Like maybe it makes sense because he believes he knows more than he actually does but it's kinda irritating It's like he goes 'oh, something's fishy' and then ignores it or just ignores weird shit altogether, which makes him seem dense. At least he pointed some of it out in chapter 19 I guess. I'll probably read the novel just to see if it's executed better.