Even if its on a emotional spectrum, the black hair guy is still an asshole, like bruh?? Dude lost BOTH of his parents, living alone and have to feed himself but instead of sympathy he punch him, feels entitled, cut him off and releash his anger on his dead friend body(thats fuked up). Fuk the promise that you made when you are 8, there just things thats too hard on people unfortunately and the way he respond back then is not fukin ok.
The story just brush it off by telling that hes still love(platonic) him and regret he didn't spend time with him, like bs, that just on him from the beginning if he has any common sense he would have realised his action are wrong.