As far as psychological goes, it's a good read. If you don't like dark stuff, or things that may make you stare at the ceiling for a little bit so you can process what you just read, don't read this.
"why does the brother look like that" I don't think it's much of a spoiler. It's just that ML's view of that character looks like that. It's a good representation of his brother once you get to it.
Just saw a video of this on social media - WHY DOES THE BROTHER LOOK LIKE THAT?? And is it a good read, thanks