Some of the comments in here are the f*king reason why society is pretty much sh*t. You guys basically have the same mindset as the one who harassed Ohga's brother. Like you say, oh why the heck is he struggling, he could have done this and that and it would have been fine. Well how about you f*king think society isn't that simple. You guys basically treat them as robots and they don't have minds of their own, like just because you're smart that he can do anything. Did you even guys read Hishiro's past and why she's a NEET? He's being harassed, his moral is basically decreasing and his mental state is getting worse. This is exactly why people find it hard to get out of a bullying situation.
Everyone has a limit, everyone can only handle so much and society put this high expectation on him. He's being harassed for basically existing and because their assumptions and not even bothering to understand him like you f*king b*stards.
He lives in a one parent household, his father went through depression since he found out he was beating cheated on, he's the only person who was able to financially support his family and he has to keep up his grades, to add to that, he has a little brother to take care of AND become a role model to. He's been holding this responsibility for his whole life, it's quite amazing that he held on this long and finally broke down. Especially if you don't have any friends to consult about, you're bound to break. Not everyone can be like, oh well their opinions don't matter and just move on. Like Hishiro did exactly that because she didn't listen to others and look where it got her.
Seriously once again, please reread this manga. There are things that exaggerate a bit but it's here to teach you these things That society can be this cruel. Just because you haven't experienced it yourself doesn't mean it doesn't exist. Stop being so f*king ignorant in other words and have an open mind. Please everyone struggles one way or another, no one, absolutely no one's life is perfect.
But that's exactly why this manga teaches you, someone needs someone to live, no one can live alone. Just one person is fine, but someone needs a person to rely on, to be able to trust, to be able to let down all your walls and can talk about anything to them. We all need someone like that in life since without that person, your life will on go downhill. It takes time to build trust with people and it can be difficult, but that's what makes it more rewarding when you truly find that person.