I don't think I'm an Otaku but I'm a fan of anime I did watch over 200 anime and a lot of movies I used to be a shut in but not completely as I remember,so if you're feeling down or something like that this might help you.
The review:
Most anime nowadays are kinda vague for an example 0 to hero kind of anime,yes it enjoyable to watch other succeeding in there life rather from a fantasy character or irl,but it's just an illusion an escape from the harsh reality we live in,so this anime(N.H.K)is different it shows you the truth of real life in an enjoyable way,it also explains a lot about the dark truth about life.
We All go through hard times and we suffer a lot and sometimes we think we get the hang of things,but we fall again just to realize how little did we knew,so what to do?! Should we just gave up?! Why should we even live at all?? The answer is very sample:don't give up that's it,if u don't gave up and you keep on trying things might get better or it might not,either way it doesn't matter just keep on living and while you're doing that try to search for something to keep holding on too.
This anime won't bs you with some vague hopes and dreams but it will helps you to keep hanging on life.
