X NO X
One brother is catatonic, the other is mundane
The plot is both
Fine to have the voice of a young, then teenage narrator, bu the voice doesn't change as the narrator gets older. And I deliberately didn't use the word "matures" because he doesn't seem to mature at all.
I am still not sure why this was a recommended read ... he must have credentials or connections. There was no plot. There was an enormous amount of trivial repetition. Boring as! Get. Over. Yourself.