there is not a wrong person in this story .. there are only two children mentally disturbed by the pressure exerted by the father and a guy who went to the crossfire. I believe that the three are suffering a lot with what is happening but believe that they are doing what is right.
the younger brother is changing thanks to the help of Louis .. and maybe, if Nick talked to Louis about his personal problems none of this would have happened .. maybe they would even be together yet.
But untreated child trauma is not an easy thing to resolve ... the two brothers need help.
(This does not mean that I agree with their actions)
Never Good Enough