Some absolutely bleak shit, everyone in my family hates it for just how batshit insane the lengths these people go to are over being stubborn bastards.
I just feel so sad for the sister and that poor kid. All he wanted was a friend and she was the only one who had ever reached out to him, but he couldn't understand platonic friendship between different genders and tried to extend into a romance, and when he failed he spiralled, and now she's going to live the rest of her life haunted by the emotions that his suicide will bring out in her, because he wasn't just some incel who couldn't take no, he was a nice but misguided kid who let the loneliness consume him.
And then there's these other two fuckasses off to the side who think talking things out like fucking adults is for pussies and spin it into a full blown blood feud with arson and attempted murder and sawing off your own fingers just to flip them off at each other even harder.
Not to mention that he was being physically abused by his father, then further emasculated after the public accusation that his father was molesting him (if that part is actually true or not, we are left to guess). He was hurt and humiliated, saw one opportunity for an actual romantic connection, got rejected, and fell into despair.